Answers to Unit 3 Test and Assignments from Week 3

Here are the Unit 3 Test answers so you can correct your work.

1. C

2. B

3. C

4. D

5. D

6. A

7. C

8. B

9. B

10. C

11. J

12. H

13. C

14. I

15. D

16. K

17. A

18. G

19. B

20. E

Chapter 4 Quiz
1. C
2. D
3. B
4. A
5. D
6. B
7. A
8. D
9. C
10. B
11. D
12. C
13. F
14. E
15. A
16. B

Here are answers to some of this weeks Assignments

p. 124

1. The cell membrane separates the inside of a

cell from the outside and controls the flow of

materials in and out of the cell.

2. The cell wall is a tough, rigid structure found

in plant cells that surrounds the cell membrane.

3. An organelle is a specialized cell part that carries

out a specific function within a cell.

4. The mitochondria change the sugar glucose

into energy that the cell can use.

5. Ribosomes are the sites where proteins are

made within the cell. They can be within the

cytoplasm or attached to the endoplasmic

reticulum.

6. After proteins are made on the endoplasmic

reticulum, they travel in vesicles to the Golgi

body for further processing and packaging.

7. The function of the nucleolus is to make ribosomes.

PG 130 # 1 - 5

I wrote in the answer for 6 as I want you to study it, as I taught it in class.

1. The DNA molecule is like a ladder. The sides

are made of sugar and phosphate, and the

steps of the ladder are made of four nitrogen

bases: A (adenine), G (guanine,) C (cytosine,)

and T (thymine).


2. In the DNA molecule, A always joins with T

and G always joins with C. (In a mutation in

DNA, incorrect base pairing may occur).


3. Chromatin is the material inside the nucleus

that contains DNA and proteins. Each strand

of chromatin contains one molecule of DNA.


4. Most human cells have 46 chromosomes or 23

pairs of chromosomes.


5. (a) Genes are small pieces of DNA that store

the information to make a particular protein.

(b) The genes are located at specific places on

the chromosome.

6. In retinal cells and muscle cells, only specific

genes are “read” in each cell and so only specific

proteins are made. Your retinal cells will

read certain genes and make different proteins

than your muscle cells, and different proteins

make your cells function differently.


Pg 135

Checking Concepts

1. (a) The answer is A, the nucleus, since it contains

the genetic material to make proteins.

(b) The answer is B, the Golgi body.

(c) The structure shown in C is the chloroplast,

which traps the energy from the Sun

to make glucose. The structure shown in

D is a mitochondrion, which provides

energy for the cell by changing a sugar

called glucose into usable energy.



2.)

3. The function of genes is to store the information

to make a specific protein.


4. To transport the information for a gene out of

the nucleus, the DNA message for a specific

protein is copied into a small molecule called

ribonucleic acid (RNA), which is small enough

to leave through the nuclear pore of the

nucleus.



5. The ribosomes that manufacture proteins for

transport out of the cell are located on the

endoplasmic reticulum.



6. The function of the Golgi body is to repackage

the protein for transport out of the cell.



7. A. sugar; B. base; C. phosphate


Pg 141


1. The Spirit Bear is white because of a gene

mutation for coat colour.



2. A gene mutation is a change in the specific

order of the A, G, C, and T bases that make

up a gene.



3. Negative mutations are harmful for the organism

and reduce the probability of offspring

being produced or surviving. Neutral mutations

do not have a beneficial or negative

effect on the organism.



4. Viruses cause mutations since viruses cause

genes to be read or copied incorrectly.



5. Three examples of environmental mutagens

are: cigarette smoke, radiation from X rays,

and pollutants. In addition, certain household

chemicals may cause mutations.









Pg 146 Chapter 4 Review


1. The nucleus is like a black box because there

are still unknown processes occurring and we

are not able to see all the activity that is happening

inside the nucleus.







2. DNA is required in every cell because DNA

contains the genes that code for the proteins

the cell requires to perform its functions.







3. The DNA molecule is like a ladder with the

sides of the ladder made of sugar and phosphates

and the steps of the ladder made up of

bases. The bases pair up, with G combining

with C, and A combining with T.







4. The four bases in DNA are A (adenine), G

(guanine), T (thymine), and C (cytosine).







5. The diagram should indicate the sugars and

phosphates on the sides of the ladder and the

bases correctly paired as the steps of the ladder.







6. Some functions of proteins in cells include

enzymes speeding up chemical reactions and

hormones acting as chemical messengers. In

addition, there are structural proteins, such as

the proteins in muscle, and signalling proteins,

such as antibodies.







7. (a) The parts of the cell that are involved in

making a protein for transport out of the

cell include the nucleus, the chromosomes,

the ribosome, vesicle, the endoplasmic

reticulum, the Golgi body, the nuclear

pore, RNA, and the plasma membrane.

(b) The nucleus receives a chemical signal to

make a specific protein. The nucleus contains

the chromosomes, which contain the

DNA. On the DNA are genes that carry

the message to make a particular protein.

The gene message is copied into RNA,

which leaves the nucleus through the

nuclear pores to the ribosomes. The proteins

are made on the ribosomes. If the

ribosomes are attached to the endoplasmic

reticulum, the proteins that are made

travel through the channels in the

endoplasmic reticulum and leave the

endoplasmic reticulum in vesicles. The

vesicles carry the protein to the Golgi body

where it is repackaged. Vesicles leave the

Golgi body and carry the proteins to the

cell membrane for export out of the cell.







8. The correct sequence of DNA bases is important

because, if the base sequence is incorrect,

then the correct protein will not be made or

the protein that is made will not work correctly.

The cell will be unable to do its job

well if the proteins are not working correctly.







9. The three types of gene mutation are: (a) substitution,

where one base is put in instead of

another; (b) deletion, in which a base is

removed from the sequence; and (c) insertion,

where an additional base is put into the

sequence. Substitution is the least harmful as

the same protein may be made. In deletion

and addition, a nonsense message is created

and the correct protein will not be made.


10. Gene mutations are caused by errors in the

DNA. They can be caused by mutagens, such

as viruses, cigarette smoke, radiation from X

rays and ultraviolet light, and various kinds of

chemicals in the environment. (In the next

chapter, students will learn that mutations can

also occur during mitosis and meiosis when

the DNA is getting copied.)


11. The sequence would be TGACAACA.


12. The sequence is e, a, i, c, f, h, b, d, g.

Day 15 - Cell Reproduction - Mitosis and Mieosis

Friday July 24th.

Here we are on the last big push!

This weekend I want to encourage all students to study chapter 5 for their quiz on Monday. They should also be reviewing their chapter quizes and assignments, as well as their unit tests for the final exam Thursday.

We will first hand back and enter results from the worksheet on Ohm's law to close out our work on Electricity. We will then go over the results for the Unit 1 test, and go over the individual answers. This is important as I will be using Unit Tests and Chapter Quizzes to create the bulk of the questions for the Comprehensive Final Exam. Today we will be going over and answering one at a time the questions from the chapter review on page 184, questions # 1-10. The students will then complete Chapter 5 Review on Pg 184 - # 11 - 26 as their ticket out the door. This will be crucial for them to succeed on the Chapter 5 quiz on Monday.

This is a good online description and quiz of mitosis and meiosis.


Here is a great video on Mitosis


And this is Meiosis. How are these two processes similar? Can you find some differences between the two?



Here is how next week looks:

Monday -Chapter 5 Quiz complete work on chapter 6

Tuesday - Mark work on Chapter 6 and prepare for Unit Test on Biology

Wednesday - Unit Test on Biology - Prepare for Final Exam

Thursday - Final Exam - Begin Astronomy (2 assignments likely)

Friday Finish Astronomy and hand in.

These are the assignments due Monday

Day 14 - Where'd you get those great Genes?!?!

Today we will be marking as a class:

First we will exchange and mark papers on Ohm's law. Then, we will be writing a Unit Test on Electricity. Mr. Gill will be marking it and returning it the next day. Our Biology lesson today will consist of returning and discussing correct answers from pg 124. We will then be marking our own work. We will choose select questions from the chapter review on pg 146 to mark as a class, and students will use their own judgement to decide whether or not a question is correct, partially correct, or incorrect. I will then collect these assignments from pg 146.



BLM 3-21, Ohm’s Law
1. 9.6 Ω
2. 1.3 A
3. 9.0 V
4. 0.75 A
5. 15 V
6. 30 Ω
7. (a) 5.0 A
(b) 2.5 A
8. 7.5 V



In a nutshell, Mitosis is the way cells reproduce themselves - there is no change in the total number of chromosomes at the end of this cell reproduction. Just think what would happen if we couldn't make new cells - we would never heal from even minor injuries, and we would have a really short lifespan!

Mitosis has some key concepts - Early and Late Prophase, Metaphase, Anaphase, and Telophase. Like much of biology, you have to learn the vocabulary to understand what is happening. I will be assigning pages

p. 161 - 1-5
p. 165 # 1-6 (pay very close attention to #6)
PG 184 #1- 10 from the Chapter Review.

Hint for Chapter 4 Quiz - One of the questions asks: "Which of the following organelles does not have a membrane?"

Reading Check Answers, p. 130
1. The DNA molecule is like a ladder. The sides
are made of sugar and phosphate, and the
steps of the ladder are made of four nitrogen
bases: A (adenine), G (guanine,) C (cytosine,)
and T (thymine).
2. In the DNA molecule, A always joins with T
and G always joins with C. (In a mutation in
DNA, incorrect base pairing may occur).

3. Chromatin is the material inside the nucleus
that contains DNA and proteins. Each strand
of chromatin contains one molecule of DNA.
4. Most human cells have 46 chromosomes or 23
pairs of chromosomes.
5. (a) Genes are small pieces of DNA that store
the information to make a particular protein.
(b) The genes are located at specific places on
the chromosome.
6. In retinal cells and muscle cells, only specific
genes are “read” in each cell and so only specific
proteins are made. Your retinal cells will
read certain genes and make different proteins
than your muscle cells, and different proteins
make your cells function differently.

Pg 146 # 1- 21

Checking Concepts
1. The nucleus is like a black box because there
are still unknown processes occurring and we
are not able to see all the activity that is happening
inside the nucleus.
2. DNA is required in every cell because DNA
contains the genes that code for the proteins
the cell requires to perform its functions.
3. The DNA molecule is like a ladder with the
sides of the ladder made of sugar and phosphates
and the steps of the ladder made up of
bases. The bases pair up, with G combining
with C, and A combining with T.
4. The four bases in DNA are A (adenine), G
(guanine), T (thymine), and C (cytosine).
5. The diagram should indicate the sugars and
phosphates on the sides of the ladder and the
bases correctly paired as the steps of the ladder.
6. Some functions of proteins in cells include
enzymes speeding up chemical reactions and
hormones acting as chemical messengers. In
addition, there are structural proteins, such as
the proteins in muscle, and signalling proteins,
such as antibodies.
7. (a) The parts of the cell that are involved in
making a protein for transport out of the
cell include the nucleus, the chromosomes,
the ribosome, vesicle, the endoplasmic
reticulum, the Golgi body, the nuclear
pore, RNA, and the plasma membrane.
(b) The nucleus receives a chemical signal to
make a specific protein. The nucleus contains
the chromosomes, which contain the
DNA. On the DNA are genes that carry
the message to make a particular protein.
The gene message is copied into RNA,
which leaves the nucleus through the
nuclear pores to the ribosomes. The proteins
are made on the ribosomes. If the

ribosomes are attached to the endoplasmic
reticulum, the proteins that are made
travel through the channels in the
endoplasmic reticulum and leave the
endoplasmic reticulum in vesicles. The
vesicles carry the protein to the Golgi body
where it is repackaged. Vesicles leave the
Golgi body and carry the proteins to the
cell membrane for export out of the cell.
8. The correct sequence of DNA bases is important
because, if the base sequence is incorrect,
then the correct protein will not be made or
the protein that is made will not work correctly.
The cell will be unable to do its job
well if the proteins are not working correctly.
9. The three types of gene mutation are: (a) substitution,
where one base is put in instead of
another; (b) deletion, in which a base is
removed from the sequence; and (c) insertion,
where an additional base is put into the
sequence. Substitution is the least harmful as
the same protein may be made. In deletion
and addition, a nonsense message is created
and the correct protein will not be made.
10. Gene mutations are caused by errors in the
DNA. They can be caused by mutagens, such
as viruses, cigarette smoke, radiation from X
rays and ultraviolet light, and various kinds of
chemicals in the environment. (In the next
chapter, students will learn that mutations can
also occur during mitosis and meiosis when
the DNA is getting copied.)
11. The sequence would be TGACAACA.
12. The sequence is e, a, i, c, f, h, b, d, g.
Understanding Key Ideas
13. To ensure the Spirit Bear does not become
extinct, the provincial government has limited
logging in the Great Bear Rainforest so that
the bear’s habitat is not destroyed.
14. Although there are only four bases, there are
many possible combinations of the sequences
of A, G, C, and T bases, so there are thousands
of possible messages to code for different
proteins.
15. The amount of DNA in a skin cell and the
amount of DNA is a muscle cell would be the
same because the DNA within each body cell
is identical.
16. DNA directs a cell to have a particular function
when messages are sent to the nucleus of
a cell to read certain genes and make specific
proteins. The proteins that are made and function
in that cell will determine if the cell is a
muscle cell or a stomach cell.
17. The number of chromosomes in an animal cell
or plant cell does not reflect how advanced the
organism is. Many plants have very large numbers
of chromosomes. Some amoeba have 40
or more chromosomes. A butterfly has 80
chromosomes, while humans have 46.
Chickens have 78 chromosomes. Scientists
have found that some DNA is very repetitive
in organisms.
18. If the nucleolus of a cell did not perform its
function, then ribosomes would not be made.
If ribosomes could not be made, then proteins
could not be made. The cell would not be able
to function and would die.
19. Gene therapy is still experimental, and there
are obstacles that must be overcome for gene
therapy to be successful. First, the healthy
genes must be able to enter the target cells.
Then, the healthy genes must be able to be
turned on to make the healthy proteins and
turned off when sufficient amounts of the protein
are made. During gene therapy, other
non-targeted cells may be affected, which may
cause complications.
20. Occupations that could pose greater risks of
mutations include: (a) pilots because they are
exposed to a lot of cosmic radiation; (b) construction
workers, because they are exposed to
a lot of dust and chemicals and sunlight; (c)
firefighters because they are exposed to many
toxic substances; (d) dry cleaners because they
are exposed to chemicals used to clean garments;
(e) bartenders because they are exposed
to smoke in bars; (f) farmers, because of their
exposure to pesticides and fertilizers and ultraviolet
light. Accept other possible answers, and
discuss the importance of following proper
safety precautions when working in the public
or using chemicals at home.
21. (a) The amounts of A and T are the same for
each type of cell since A pairs with T, so, if
there are 180 000 adenine bases in a piece
of DNA, the DNA should contain 180 000
thymine bases.
(b) The amount of bases is different because
these are different organisms. However,
the percentage of A=T and G=C should be
the same.
(c) The human liver and human heart sample
have the same number of chromosomes

Day 13

Today we reviewed:
- The parts of animal and plant cells
- How DNA contains information and forms patterns in base pairs
- What mutations are, and how there are different kinds of mutations
-That mutations can be positive, negative, or neutral.

Today's Homework is:
Pg 130 # 1 - 5
Pg 135 # 1 - 6
Chapter review Pg 146# 1 - 21

Also, students will be preparing for the Unit 3 test on Electricity for Thursday. You will be permitted 1 single sided sheet of paper to take into the test and use as a cheat sheet.

For Friday's chapter 4 quiz on cells - all the "Matching Answers" are on page 122-124. Most of them were covered in the homework on page 124 # 1-7 which we just handed in.

Yesterday's Work:

Pg 330 # 1 - 21
1. A series circuit contains only one pathway,
whereas a parallel circuit contains more than
one pathway.

2. The current through the second resistor is the
same as the current through the first resistor.

3. The total voltage lost on the three resistors
would be 6.0 V.

4. (a) Increases
(b) Decreases

5. The voltage is the same on both of the
resistors.
TR 3-50 MHR • Characteristics of Electricity

6. (a) The total current leaving the junction
point must equal the current entering the
junction point.
(b) The current in the two pathways will be
different.

7. (a) Power is the rate at which energy is transformed.
(b) Power is measured in watts (W).

8. Power is the product of voltage and current:
P = VI.

9. (a) Electrical energy is measured in joules (J)
and kilowatt-hours (kW•h).
(b) The kilowatt-hour is a larger unit.

10. Energy is the product of power and time:
E = Pt.


11. (a) The second bulb goes out.
(b) The result would be different if the bulbs
were connected in parallel. Even if one
bulb “burns out,” there is still a pathway
for current through the second bulb and
therefore it would stay lit.

12. (a) Students’ answers may vary but could
include a car racetrack or a single-lane
bridge.
(b) Students’ answers may vary but could
include multiple checkouts at the supermarket
or entering a bus by two different
doors.

13. (a) The resistors are connected in parallel.
Electrons leaving the battery have two
pathways to return to the battery.
(b) The resistors are connected in series.
Electrons leaving the battery must travel
through both resistors in order to return to
the battery.
14. V1 = 5.0 V, A1 = 2.0 A
15. (a) The current would decrease because
adding another resistor in series increases
the total resistance of the circuit.
(b) The current would increase because adding
another resistor in parallel decreases the
total resistance of the circuit.
16. V1 = 6.0 V, A1 = 2.0 A
17. 144 W
18. 10 A
19. 18 W
20. Lamp 1 = 27 W, Lamp 2 = 18 W
21. Light bulb, hair dryer, microwave oven

BLM 3-23, Practising Calculating Resistance
1. R = 3600 Ω or 3.6 × 103 Ω
2. I = 0.48 A or 4.8 × 10-1 A
3. V = 9.0 V
4. I = 18.3 A or 1.83 × 10-1 A
5. 3.0 Ω
6. 11 Ω
7. 220 Ω or 2.20 × 102 Ω
8. 0.30 A or 3.0 × 10-1 A
9. 4 × 10-4 A 0.0004 A or 0.04 A or 0.04 mA
10. 120 V or 1.20 × 102 V

BLM 3-28, Series Circuits
1. only one
2. equal to
3. different from
4. increases
5. equal to
6. Voltage = 10 V, current = 3.0 A
7. Voltage = 12 V, current = 4.0 A


BLM 3-29, Parallel Circuits
1. more than one
2. different from
3. equal to
4. decreases
5. equal to
6. Voltage = 12 V, current = 6.0 A
7. Voltage = 90 V, current = 1.0 A

Day 12 - Electrical Power and Electrical Energy Consumption

Today we went over the answers to pg 125 in detail on the board. Students were then offered the chance to ask questions about their homework before submitting it. Before doing seatwork, a number of students who didn't pass the Chapter 8 quiz needed to re-take it.



Then we did some more complex practice of Ohm's law, and the rules and calculations of Current, Resistance, and Voltage in parallel and series circuits. Finally we went over two more formulae;

1.) Power (Watts) = Voltage X Current (P =VI)

2.) Electrical Consumption (in Joules ) = Power (Watts) X time (in seconds)

E = Pt

Remember to use the right units, i.e. convert time from minutes or hours into seconds, and on the Chapter 9 Quiz tomorrow (Wednesday), make sure you include the correct units of measure in your answer (volts, watts, amps, etc.).

Today's homework:
Pg 124 #1-7

Worksheet- 3-18

Worksheet- 3-21

Worksheet- 3-23

Worksheet- 3-28

Worksheet- 3-29

Answers

Pg 313 # 1-6

1. A circuit that contains more than one pathway
is called a parallel circuit.

2. When two loads are connected in parallel, the
voltage across each load will be equal.

3. When two loads are connected in parallel, the
current through each load does not have to be
equal.

4. A junction point is the location in a circuit
where the circuit branches into more pathways
or where pathways rejoin.

5. The current entering a junction point must
equal the current leaving the same junction
point.

6. When you add a resistor in parallel to an existing
resistor, the total resistance of the circuit
decreases.

Pg 319 # 1 - 7

1. A parallel circuit contains more than one pathway
for electrons to travel. A series circuit has
only one pathway for electrons to travel.

2. The sum of the voltages lost on each load is
equal to the voltage supplied by the battery.

3. When another resistor is added in series, the
total resistance of the circuit increases.

4. When another resistor is added in parallel, the
total resistance of the circuit decreases.

5. The voltage across the two resistors must be
the same as the battery voltage.

6. The current in one branch of a parallel circuit
is less than the total current entering the junction
point of the circuit.

7. (a) 2.0 A
(b) 6.0 V







Pg 330 # 1-21 Checking Concepts

1. A series circuit contains only one pathway,
whereas a parallel circuit contains more than
one pathway.
2. The current through the second resistor is the
same as the current through the first resistor.
3. The total voltage lost on the three resistors
would be 6.0 V.
4. (a) Increases
(b) Decreases
5. The voltage is the same on both of the
resistors.




6. (a) The total current leaving the junction
point must equal the current entering the
junction point.
(b) The current in the two pathways will be
different.
7. (a) Power is the rate at which energy is transformed.
(b) Power is measured in watts (W).
8. Power is the product of voltage and current:
P = VI.
9. (a) Electrical energy is measured in joules (J)
and kilowatt-hours (kW•h).
(b) The kilowatt-hour is a larger unit.
10. Energy is the product of power and time:
E = Pt.




11. (a) The second bulb goes out.
(b) The result would be different if the bulbs
were connected in parallel. Even if one
bulb “burns out,” there is still a pathway
for current through the second bulb and
therefore it would stay lit.
12. (a) Students’ answers may vary but could
include a car racetrack or a single-lane
bridge.
(b) Students’ answers may vary but could
include multiple checkouts at the supermarket
or entering a bus by two different
doors.
13. (a) The resistors are connected in parallel.
Electrons leaving the battery have two
pathways to return to the battery.
(b) The resistors are connected in series.
Electrons leaving the battery must travel
through both resistors in order to return to
the battery.
14. V1 = 5.0 V, A1 = 2.0 A
15. (a) The current would decrease because
adding another resistor in series increases
the total resistance of the circuit.
(b) The current would increase because adding
another resistor in parallel decreases the
total resistance of the circuit.
16. V1 = 6.0 V, A1 = 2.0 A
17. 144 W
18. 10 A
19. 18 W
20. Lamp 1 = 27 W, Lamp 2 = 18 W
21. Light bulb, hair dryer, microwave oven

Day 11 - Series and Parallel circuits

Here is the work we did in class today:

Go over some homework questions before handing in – make sure people get a chance to correct them.
Give out quiz on chapter 8 – retests for those who failed ch 7 immediately afterwardsAssign up to the chapter review for chapter 9 – prepare for quiz next day and unit test next day.




1.) We wrote a quiz on Chapter 8 - results to be handed back tomorrow.
2.) Pg 313 # 1 - 6
3.) Pg 319 # 1 - 7
4.) pG 330 # 1- 21



Good luck, and remember we will finish chapter 9 this week, and do a quiz on Chapter 9. This week we will also be doing a Unit Test on Chapter 7, 8, and 9. Feel free to bring questions to Mr. Gill before and after class.

Answers to Chapter 8


Chapter 8 Quiz
1. C
2. B
3. D
4. A
5. D
6. A
7. C
8. C
9. C
10. D
11. D
12. B
13. A
14. G
15. E
16. C

Answers from last day's work

Pg 302 # 1- 21 Checking Concepts

1. The battery is the source of electric potential
energy in a circuit.
2. In a battery, chemical energy is transformed
into electric potential energy.
3. The amount of electric potential energy is
dependent on both the amount of charge
separated and the voltage.
4. Two dissimilar metals and an electrolyte are
needed to produce an electrochemical cell.
5. Five methods of producing electrical energy
are: friction, piezoelectric crystals, photoelectrochemical
cells, thermocouples, and
generators. Other answers may be acceptable.
6. Voltage is measured in volts.
7. A voltmeter is used to measure voltage.
8. An ammeter is used to measure current.
9. See Mr. Gill for answer
10. See Mr. Gill for answer
11. 1000 mA = 1 A
12. Conventional current is the flow of positive
charge and therefore flows from positive to
negative. Electron flow is the flow of negative
charge and therefore flows from negative to
positive.
13. The four basic components of an electric circuit
are: source, conductor, load, and switch.
14. Resistance is the property of any material that
slows down electrons and converts electrical
energy into other forms. A resistor is an electrical
component that has resistance.
15. Voltage equals the product of current and
resistance.
16. When an electron passes through a resistor, its
electrical energy is transformed into other
forms of energy.
17. An ohmmeter is a device used to measure
resistance.
18. The four coloured bands on a resistor represent:
first digit, second digit, multiplier, and
accuracy.
Understanding Key Ideas
19. Skiers at the top of a hill have gained potential
energy. This potential energy can now change
into other forms as they ski down the mountain.
Electrons on the negative terminal of the
battery also have potential energy and can
transform this energy into other forms of
energy as they pass through the circuit.
20. The reading on the voltmeter would now be
zero. This is because both leads are at the
same potential; therefore there is no potential
difference (voltage).
21. Electric potential energy is due to both the
voltage and the amount of charge separated.
Even though the two batteries have the same
voltage, one of the batteries could be able to
separate more charge and therefore provide a
greater energy.

Day 10 - Ohm's law, resistance and current

Friday's lesson we wrote a test on Chapter 7 Static Electricity. We also spent time reviewing chapter 8's concepts on circuits, and focussed on Ohm's law.

Pg 302 # 1- 18 The Chapter Review
Also from the handout in class Pgs 124 and 125 All Questions



And, you know if Mr. Gill assigns a Chapter review, a chapter quiz will surely follow. There is a quiz on chapter 8 on Monday.



Chapter 7 Quiz Answers
1. C
2. D
3. B
4. C
5. A
6. C
7. B
8. C
9. A
10. B
11. F
12. C
13. G
14. A
15. D
16. B