8.) What happens to the magnetic field when the electric current in a wire is increased?

The magnetic field remains the same

9.) Choose an experiment to show how static electricity can be generated by friction.

Rub a balloon on your hair and observe the attraction to small paper pieces

10.) Mrs. Effrein rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?

The balloons will repel each other.

The balloons will attract each other.

The balloons will become positively (+) charged.

11.) What happens to the resistance in a wire if its length is doubled?

The resistance remains the same

13.) Increasing the number of coils in an electromagnet on its strength.

The strength of the electromagnet increases

The strength of the electromagnet decreases

The strength of the electromagnet remains the same

The electromagnet stops working

14.) A student observes that a magnet can attract a paperclip through a piece of paper. Explain why this occurs.

The magnetic field can pass through non-magnetic materials like paper.

The paperclip is not affected by the paper.

The paperclip generates its own magnetic field.

The paper enhances the magnetic field.

15.) How can you increase the strength of a magnetic field produced by a solenoid?

Increase the current passing through the solenoid.

Use a plastic core inside the solenoid.

Decrease the voltage applied to the solenoid.

16.) A student places a compass near a bar magnet. Describe what happens to the compass needle and why.

The needle aligns with the magnetic field lines of the magnet.

The needle points away from the magnet because it is repelled.

The needle spins rapidly due to the magnetic force.

The needle does not move because it is not affected by the magnet.

Priya and Avery are on a mission to make their own doorbell using a battery, a bell, and a switch. They notice the battery has two metal posts. Why do you think there are two metal posts on the battery?

The battery needs to form a complete circuit that starts with one metal post and ends with the other metal post.

The battery needs only one metal post to connect to the bell, but the other metal post is present in case the first post fails to work.

One metal post makes a complete circuit with the switch, and the other metal post makes a complete circuit with the bell.

One metal post makes the bell start to ring, and the other metal post makes the bell ring louder.

Emma and Liam are on a mission to power up their science project! How can they increase the current within their circuit?

Add more batteries (increase the voltage)

Use a great conductor (decrease the resistance)

Use smaller batteries (decrease the power)

Add more light bulbs in a series (increase consumption)

Benjamin and Sophia are exploring circuits in their science class. They come across this circuit and wonder, "Is this circuit ...........................?"

the cutiest little circuit ever!

What would happen when the opposite poles of magnets are placed together?

The force will pull them together (attract).

The force will push them away from each other (repel).

The strength of the magnet is doubled.

What would happen when two north poles of magnets are placed together?

The force will push them away from each other (repel).

The force will pull them together (attract).

The strength of the magnet is doubled.

What would happen if you took one end of the wire off the battery?

The nail would no longer be a magnet

What is the role of the battery in the electromagnet?

It provides the power source for the electromagnet.

It provides light energy for the electromagnet.

It provides magnetic field for the electromagnet.

It provides sound energy for the electromagnet.

Topic 7 Test

Quiz

•

Science

•

8th Grade

•

Practice Problem

•

Easy

•

NGSS

MS-PS2-3, MS-ETS1-1, 3-PS2-3

+6

Standards-aligned

Micah Effrein

Used 1+ times

FREE Resource

45 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 4 pts

1.) Plan a simple circuit that includes a battery, a switch, and a light bulb. Explain how energy is transferred in this circuit.

Energy is transferred from the battery to the switch and then to the light bulb

Energy is transferred from the light bulb to the battery

Energy is transferred from the switch to the battery

Energy is transferred from the light bulb to the switch

Tags

NGSS.MS-PS3-5

2.

MULTIPLE CHOICE QUESTION

30 sec • 4 pts

2.) Which of the following is a property of a good insulator?

High electrical conductivity

Low electrical conductivity

High thermal conductivity

Low thermal conductivity

Tags

NGSS.MS-PS3-3

3.

MULTIPLE CHOICE QUESTION

30 sec • 4 pts

3.) Objects that have opposite charges

are attracted to each other, and the force between the objects pulls them together.

are attracted to each other, and the force between the objects pushes them apart.

are repelled by each other, and the force between the objects pulls them together.

are repelled by each other, and the force between the objects pushes them apart.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

4.

MULTIPLE CHOICE QUESTION

30 sec • 4 pts

4.) Which material is most likely to conduct electricity?

Rubber

Copper

Wood

Plastic

5.

MULTIPLE CHOICE QUESTION

30 sec • 4 pts

5.) Lighting is a form of static electricity.

True

False

Maybe

I do not know.

6.

MULTIPLE CHOICE QUESTION

30 sec • 4 pts

6.) What types of charges attract?

Positive and Positive

Positive and Negative

Positive and Neutral

Negative and Neutral

Tags

NGSS.MS-PS2-3

7.

MULTIPLE CHOICE QUESTION

30 sec • 4 pts

7.) Which of the following materials is an insulator?

Aluminum

Rubber

Copper

Silver

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