embedded assessment notes energy and electromagnetism · pdf filefoss energy and...

Investigation ___, Part ___ Date_____________

Got it!

Concept

Concept

Refl ections/Next Steps

Embedded Assessment Notes

FOSS Energy and Electromagnetism Module© The Regents of the University of CaliforniaCan be duplicated for classroom or workshop use.

Embedded Assessment NotesNo. 1—Assessment Master

Energy and Electromagnetism

Investigation ___, Part ___ Date_____________

Got it!

Concept

Concept

Refl ections/Next Steps

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FOSS Energy and Electrom

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Can be duplicated for classroom or w

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Assessm

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Assessm

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Assessm

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o. 5—A

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Assessm

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Student Nam

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Assessm

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Assessm

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SURVEY/POSTTESTENERGY AND ELECTROMAGNETISM

Name

Survey/PosttestPage 1 of 9

1. A student is using an open switch to test objects

to fi nd out if they are insulators or conductors.

How will she know if the object she is testing is

a conductor?

(Mark the one best answer.)

❍ A The motor will stop running.

❍ B A light will shine.

❍ C Her fi ngers will get hot.

❍ D The motor will start to run.

2. Write X next to each item that will stick to a magnet.

(Mark all the objects that will stick.)

_____ A piece of yarn

_____ A steel screw

_____ A copper penny

_____ An iron nail

_____ A plastic knife

3. Which of these energy sources is considered nonrenewable?


❍ F Fossil fuels

❍ G Solar power

❍ H Geothermal power

❍ J Hydroelectric power

Date



Name

4. A student has two magnets and thin pieces of cloth, plastic, aluminum, and steel. He wants to

know if the force of magnetism acts through all these materials. What do you think he will

fi nd out?


❍ A Magnetism acts through all the materials.

❍ B Magnetism acts through all the materials except the metals (aluminum and steel).

❍ C Magnetism acts through all the materials except the steel.

❍ D All these materials block the force of magnetism.

5. Identify each circuit as series or parallel.

(Mark one answer for each circuit.)

a. d.b. c.❍ Series

❍ Parallel


= lightbulb in holder

= D-cell

❍ Series

❍ Parallel

❍ Series

❍ Parallel

❍ Series

❍ Parallel



Name

6. A student is making an electromagnet. She needs to choose a rivet (core) to wrap the wire

around. She can choose from a copper, iron, or steel rivet. Which sentence below is true?


❍ F She can use any of the rivets because they are all metals.

❍ G She can use the iron or steel rivets.

❍ H She can use only the iron rivet.

❍ J She can use only the copper rivet.

8. You can connect more than one D-cell in a series circuit or a parallel circuit. What happens

when you do that?


❍ F The power adds if you use either type of circuit.

❍ G The power adds in parallel, but not in series.

❍ H The power adds in series, but not in parallel.

❍ J The power doesn’t change no matter what type of circuit you use.


7. The painted end of the compass needle is pointing

toward the head of the rivet. Which end of the

compass needle will point to the other end of the

rivet if the compass is moved?


❍ A The painted end of the compass needle

❍ B The unpainted end of the compass needle

?



Name

9. Which sentence best describes how electricity fl ows through a simple circuit that includes a

D-cell, switch, and buzzer? Electricity fl ows from


❍ A both the negative and positive sides of the D-cell to the buzzer.

❍ B the positive side of the D-cell to the buzzer to the negative side of the D-cell.

❍ C the negative side of the D-cell to the buzzer to the positive side of the D-cell.

❍ D the positive side of the D-cell to the negative side of the D-cell to the buzzer.

10. Which one of these circuits will work?


❍ Circuit F ❍ Circuit G

❍ Circuit H ❍ Circuit J




Name

12. Write X next to each object that conducts electricity.

(Mark all the correct answers.)

_____ A piece of string

_____ A steel pair of scissors

_____ A piece of the rock magnetite

_____ An iron rivet

_____ A brass door handle

11. A teacher spilled a box of paper clips on the fl oor. He used a magnet to pick them up. He

noticed that some of the paper clips were sticking to other paper clips, not directly to the magnet.

Write X next to each sentence below that helps explain what is happening.

(Mark all the sentences that are true.)

_____ Only the paper clip touching the magnet becomes magnetized.

_____ The paper clips could be made of any kind of metal.

_____ All the paper clips become temporary magnets in order to stick.

MagnetPaper clips




Name


13. You are standing in a room with some objects on a table. The door is closed, and it is completely

dark—there is no light source. Which of the following sentences is true?


❍ A You will be able to see the shape of the objects, but not their colors.

❍ B You will never see anything, even if you are there for a long time.

❍ C You will be able to see a little bit after your eyes get used to the dark.

❍ D You will be able to see only the objects that are white.

14. Standing in a room where there is only blue light, a green ball will look _____ .


❍ F white

❍ G green, but darker

❍ H blue, but lighter

❍ J black

15. Which sentence about light is true?


❍ A Light rays travel in straight lines.

❍ B Light rays curve around objects that are in the way.

❍ C When an object absorbs all the light, the object looks white.

❍ D Refraction occurs when a material refl ects all colors of light.



Name

OPEN-RESPONSE QUESTION

16. Three magnets are placed on a pencil. The two

bottom magnets are touching each other, but the

top magnet seems to be fl oating on air. Explain

the forces at work to make this happen.

Magnet 1

Magnet 2Magnet 3




Name


17. A student wrote in his science notebook,

A mirror reflects light. But I am not a light source. So why can I see myself in a mirror?

Write a letter to this student explaining how he can see himself in the mirror.




Name


18. A student drew this picture in her science notebook. Label all of the components and describe

how each component works to create the electromagnet.

Word bank: D-cell, core, switch, insulated wire, magnetism, electricity.



INVESTIGATION 1 I-CHECKENERGY AND ELECTROMAGNETISM

Name

1. Study the diagram of an electric circuit.

a. Identify the parts of the electric circuit.

(Match the letters from the picture above to each component’s name, and write them on the blank lines.)

_____ D-cell _____ Negative terminal

_____ Wire _____ Motor

_____ Positive terminal _____ Switch

Investigation 1 I-CheckPage 1 of 6

A

E

F

D B

C

b. Identify what each component does in the circuit.

(Write the letter from the picture that matches the function of each component.)

_____ Provides the stored energy to run the circuit

_____ Controls the fl ow of electricity by opening and closing the circuit

_____ Produces motion when part of a complete circuit

_____ Provides the pathway to carry the electricity from component to component

Date



Name


2. Which picture shows how electricity fl ows through the circuit?


3. What kinds of materials make good conductors?


❍ F Some metal materials

❍ G Plastic materials

❍ H All metal materials

❍ J Wooden materials

4. A battery, fossil fuels, and food are all examples of _____ .


❍ A energy

❍ B electric energy

❍ C stored energy

❍ D energy transfer

❍ A ❍ D❍ B ❍ C



Name


6. Which circuit will light the bulb?


5. You can’t see electricity when it is fl owing. You need to have some other kind of evidence.

Write X next to each phrase that describes evidence that electricity is fl owing.

_____ A component gets hot.

_____ A motor stops spinning.

_____ The switch is closed.

_____ A lightbulb shines.

7. Write R next to the resources below that are renewable.

Write N next to the resources that are not renewable.

_____ The Sun

_____ Fossil fuels

_____ Hydroelectric power

_____ Geothermal power

+ –+ -

+

–

+

–

❍ F ❍ J❍ G ❍ H



Name

8. A student wants to make this a complete circuit. What can she use to conduct electricity between

the D-cell and the switch?


❍ A A piece of string

❍ B Aluminum foil

❍ C Plastic straws

❍ D Wooden craft sticks

9. Write X next to each way to conserve energy.

_____ Keep your TV on all the time.

_____ Use fl uorescent bulbs rather than incandescent bulbs.

_____ Keep the refrigerator door open while you decide what you want to eat.

_____ Turn off the lights when you’re not in a room.

10. A lightbulb in a circuit transfers energy into _____ .


❍ F motion

❍ G heat and light

❍ H sound and light

❍ J light




Name


11. What is energy? Describe two energy sources other than the Sun.




Name

12. The switch in the picture is made of plastic, aluminum, and copper. Some of these materials are

insulators, and some are conductors.

a. Explain which parts are insulators and which are conductors.

b. Explain why the switch needs to be made of both insulators and conductors.





Name


+ –+ -

+

–+–

❍ A ❍ D❍ B ❍ C

1. Which circuit below will light the bulb?


3. In an electric circuit, the component that controls the fl ow of electricity is the _____ .


❍ A D-cell

❍ B switch

❍ C wire

❍ D lightbulb or motor

Date

2. The picture shows an incomplete circuit. Which material would complete the circuit?


❍ F A piece of plastic tubing

❍ G A painted aluminum soft-drink can

❍ H A felt marker

❍ J A steel fork



Name

4. a. What will happen if bulb Y burns out?


❍ F Neither bulb X nor bulb Z will continue to shine.

❍ G Bulb X will continue to shine, but not bulb Z.

❍ H Bulb Z will continue to shine, but not bulb X.

❍ J Both bulb X and bulb Z will continue to shine.

b. The circuit above is an example of _____ .


❍ A an incomplete lightbulb circuit

❍ B lightbulbs in parallel

❍ C an open lightbulb circuit

❍ D lightbulbs in series


Bulb X

Bulb Y

Bulb Z



Name

5. a. What happens when the loose wire in this circuit is connected?


❍ F The motor will run. The lightbulb will shine.

❍ G The motor will not run. The lightbulb will not shine.

❍ H The motor will run. The lightbulb will not shine.

❍ J The motor will not run. The lightbulb will shine.

b. When the wire is connected, the circuit above is an example of _____ .


❍ A an incomplete circuit

❍ B a parallel circuit

❍ C an open circuit

❍ D a series circuit




Name

6. A student wants to complete the circuit you see in the picture to make only bulb Q light up.

Where should another wire be attached to make bulb Q light?


❍ F Between points 1 and 2

❍ G Between points 2 and 3

❍ H Between points 1 and 3

❍ J Between points 2 and 4

Bulb Q Bulb R1

2

3 4

7. An iron used for pressing clothes transfers energy into _____ .


❍ A motion

❍ B heat

❍ C sound

❍ D light




Name

8. a. How will the circuit above work?


❍ F The bulb will shine, but the motor will not run.

❍ G The motor will run, but the bulb will not shine.

❍ H Neither the bulb nor the motor will work.

❍ J The bulb will shine, and the motor will run.

b. How would you change the circuit above so that both the bulb and the motor will work?


❍ A Don’t change anything; both the bulb and motor already work.

❍ B Move the end of wire C from contact point 4 to 3.

❍ C Move the end of wire B from contact point 4 to 3.

❍ D Move the end of wire A from contact point 2 to 1.


4

Wire A Wire B

Wire C

Wire D

12

3



Name

9. The picture shows two lightbulbs powered by a solar cell. When the circuit is placed in the

sunlight, the bulbs shine, but they are very dim. Describe two diff erent ways you could get the

lights to shine brightly and why each way will work.

One way is to

Another way is to





Name

10. Imagine that you are a person building a house and you have to decide whether to wire the

house in series or in parallel. Because you will be on the city electricity grid, you have plenty of

power to make lights shine brightly whether you use series or parallel circuits.

Write a short paragraph describing which type of circuit you will use and why. If you need help

explaining your thinking, include a drawing in the space below the lines.





Name

Object Sticks to magnets? Conducts electricity?Iron nail

❍ yes ❍ no ❍ yes ❍ no

Plastic straw


Steel wire screen


Brass ring


Wooden craft stick


Magnetite



1. Which objects stick to magnets and which conduct electricity?

(Mark an answer in each column for each object.)

Date



Name


❍ A

❍ B

❍ C

❍ D

N NN

N N N

N N N

N N N

S S S

S S S

S S S

S S S

2. Three bar magnets are held together. What are the magnets going to look like when the hands

let go of the magnets?


Magnet 1 Magnet 2 Magnet 3

N N NS S S

3. Which pair of sentences is true?


❍ F All metals stick to magnets. All metals conduct electricity.

❍ G Some metals stick to magnets. Some metals conduct electricity.

❍ H Some metals stick to magnets. All metals conduct electricity.

❍ J All metals stick to magnets. Some metals conduct electricity.



Name


4. A student has two magnets. One magnet is on top of the table. The other magnet is in his hand.

He puts his hand with the magnet under the table. Why does the magnet on top of the table

move?


❍ A The magnetic force acts through the wood table.

❍ B Magnets can stick to wooden tables.

❍ C The magnetic force makes the wood table become a temporary magnet.

❍ D The magnet on top and the wood table repel each other.

(2)(1)

5. A student has two keys. One is iron. One is aluminum. How can the student test the keys to

fi nd the one made of iron?


❍ F Use a test circuit, only the iron key will conduct electricity.

❍ G Use a test circuit, only the aluminum key will conduct electricity.

❍ H Use a magnet, only the aluminum key will stick.

❍ J Use a magnet, only the iron key will stick.



Name


6. Think about the experiment you did in class using the balance shown in the picture.

a. What question were you gathering data to answer?


❍ A How much do magnets weigh?

❍ B How much force is needed to get two magnets to repel each other?

❍ C How does distance between two magnets aff ect the force of attraction

between them?

❍ D If there is plastic between two magnets, how much force is needed to pull the

two magnets apart?

b. If you were writing a report about this experiment, which sentence might you include?


❍ F As the distance between magnets increases, the force of attraction decreases.

❍ G Two magnets have more magnetic force when they are far apart.

❍ H Plastic spacers block the force of magnetism between two magnets.

❍ J Magnets weigh less when they are farther apart.



Name

7. a. Which question was this student testing?


❍ A How many paper clips can you pick up with a magnet?

❍ B How many trials are needed to pick up the most paper clips?

❍ C How does the strength of magnetism change as the number of magnets increases?

❍ D How can you fi nd the average number of paper clips picked up by a magnet?

c. What conclusion can be drawn from the data in the table?


❍ A The average number of paper clips one magnet can pick up is 9.

❍ B The more magnets you use, the fewer paper clips you can pick up.

❍ C You can’t make a conclusion; something is wrong because the student should

have gotten the same number of paper clips for each trial.

❍ D The more magnets you use, the stronger the force of magnetism.


Number of paper clips picked upNumber of magnets Trial 1 Trial 2 Trial 3

1 8 9 7

2 13 16 14

3 22 23 24

b. What did the student use to measure the strength of attraction?


❍ F Number of paper clips

❍ G Number of magnets

❍ H The mass of the paper clips

❍ J The mass of the magnets



Name


8. A steel fi le cabinet has been sitting in the same place in a classroom for many years. A student

holds a compass at the top of the cabinet. The painted end of the needle points toward the

cabinet.

The student moves the compass down to the bottom of the fi le cabinet and sees the needle turn.

Now the needle is pointing in the opposite direction. How can you explain the movement of

the compass?


❍ F Someone must have rubbed a magnet back and forth on the cabinet.

❍ G The cabinet has become magnetized by Earth’s magnetic fi eld.

❍ H An electric current must be running through the cabinet.

❍ J The cabinet must be full of magnets.

The painted end of the needle is pointing toward the cabinet.

The end of the needle that is not painted is pointing toward the cabinet.



Name


SN


9. The poles on the horseshoe magnet above are not labeled. Explain how you could use the bar

magnet to determine where the poles are on the horseshoe magnet.



Name



10. A student exploring magnets discovered that she could touch

a nail to a magnet, then the nail picked up a paper clip and the

paper clip picked up a screw.

Explain to this student what is happening.



Name


Date

1. Identify the parts of this electromagnet circuit.

(Match the letters from the picture above to each component’s name, and write them on the blank lines.)

_____ D-cell _____ Wire coil

_____ Wire _____ Core

_____ Switch

2. Identify what each component does in the circuit.

(Write the letter from the picture that matches the function of each component.)

_____ Becomes a temporary magnet when electricity is fl owing through the circuit

_____ Provides the pathway to carry the electricity from component to component

_____ Controls the fl ow of electricity by opening and closing the circuit

_____ Provides the stored energy to run the electromagnet

C

A

F

D

BE



Name


4. Which rule should you use to decide whether a brass rivet or an iron rivet would make the better

core for an electromagnet?


❍ F All metals conduct electricity.

❍ G Magnets stick to some metals.

❍ H Opposite poles attract; like poles repel.

❍ J Only objects made of iron or steel can be magnetized.

core

3. Which action would make an electromagnet stronger (able to pick up more washers)?


❍ A Use thinner wire

❍ B Wire another D-cell into the circuit in series

❍ C Wind fewer wraps around the core (rivet)

❍ D Wind the wraps loosely rather than tightly

5. Write X next to each sentence that describes where electricity fl ows in an electromagnet.

_____ Electricity fl ows through the rivet or core.

_____ Electricity fl ows through the insulation of the wire.

_____ Electricity fl ows through the switch when it is closed.

_____ Electricity fl ows through the wire from the negative to the positive side of the D-cell.



Name


7. The graph shows the results of an investigation with an electromagnet. When 22-gauge wire was

used, how many nails did it pick up?


❍ F 15

❍ G 24

❍ H 18

❍ J 10

0 10 20 30 40 50

25

20

15

10

5

0

Wire gauge (larger number = thinner wire)

Num

ber o

f nai

ls li

fted

6. Look at the picture of two electromagnets near each other. The switches on both electromagnets

are closed. Which statement about these electromagnets is true?


❍ A The electromagnets will repel.

❍ B The magnetic forces cancel each other.

❍ C The electromagnets will attract.

❍ D Electricity will fl ow from one electromagnet to the other if they touch.



Name


8. A student set a compass on top of a wire not yet connected in a circuit. When he connected the

wire to the positive side of the D-cell, the compass needle moved. Why did the compass needle

change position when the circuit was closed?


❍ A When the circuit is complete, electricity also runs through the compass.

❍ B A magnetic fi eld surrounds a wire when electric current fl ows through it.

❍ C The compass indicates how much power is left in the D-cell.

❍ D The magnetic poles of the D-cell were reversed causing the compass needle to move.



Name



9. How are permanent magnets and electromagnets alike and diff erent?

Alike:

Diff erent:



Name



10. Robert-Houdin was a French magician who lived in the 1800s. For one of his tricks, he placed

a suitcase on the stage and asked the biggest, strongest man in the audience to try to lift it up. As

the man approached the stage, the magician waved his arms and proclaimed that he had taken

away all of the man’s strength. The strong man tried, but he couldn’t budge the suitcase. Then

the magician asked a small child to lift the suitcase. The child easily picked up the suitcase and

carried it off the stage.

Robert-Houdin was experimenting with a new technology at the time: an electromagnet.

Explain how you think Robert-Houdin used an electromagnet to make this trick work.

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