An electric field gets stronger as you __________.

add negatively charged particles to a positively charged object

remove negatively charged particles from a negatively charged object

A student builds a circuit that lights a lightbulb. A second bulb is added to the same loop between the first bulb and the battery. Which statement describes the brightness of each bulb?

Each bulb will be dimmer than the first bulb was.

Each bulb will be as bright as the first bulb was.

The first bulb will be the same brightness, and the second bulb will be dimmer.

The first bulb will be dimmer than it was, and the second bulb will not light.

Which of the following statements about the forces between charged objects is NOT true?

As the distance between charged objects decreases, the electric force between them decreases.

If one object is positively charged and another is negatively charged, the objects will attract each other.

Two negatively charged objects will repel each other.

As the amount of charge on either object decreases, the electric force between them decreases.

What makes an electric motor spin?

The permanent magnet and the electromagnet alternately attract and repel each other.

The permanent magnet and the electromagnet continuously attract each other.

The permanent magnet and the electromagnet continuously repel each other.

The permanent magnet and the electromagnet alternately attract and repel the power source.

Which of the following describes both an electromagnet and a permanent magnet?

It has a north pole and a south pole.

The strength of the magnetic force can be controlled.

The magnetic force can be turned off and on

Almas makes an electromagnet to pick up small metal pins as shown below. How would increasing the number of wire loops around the nail affect the strength of the electromagnet?

It would increase the strength of the electromagnet.

It would decrease the strength of the electromagnet.

It would not change the strength of the electromagnet.

Petrit places a magnetic compass next to a wire. He connects the wire to a battery. Once an electric current starts flowing through the wire the compass needle changes direction. How does the electric current in the wire produce this effect?

It generates a magnetic field that affects the compass needle.

It generates a contact force that pulls on the compass needle and causes it to move.

It generates an electric field that affects the electric charges in the compass needle.

At a science museum, Ella finds some stationary bikes with magnets attached to their back wheel. When Ella pedals a bike, the magnets on the wheel rotate through a coil of wire. This produces an electric current that lights up a series of lightbulbs. She then pedals a bike at the same speed, but with weaker magnets on the back wheel. How would pedaling a bike with weaker magnets affect the electric current generated?

It would decrease the electric current generated.

It would increase the electric current generated.

Using a bike with weaker magnets would not affect the electric current generated.

Which statement is true?

As the electric current through a wire increases, the magnetic field around the wire becomes stronger.

As the electric current through a wire increases, the magnetic field around the wire becomes weaker.

As the electric current through a wire increases, the magnetic field around the wire is unaffected.

As the electric current through a wire decreases, the magnetic field around the wire becomes stronger.

Jane is studying electrical forces using two metal paper clips. The paper clips both have equal negative charges and are placed 30 cm away from each other. Jane quadruples the charge on one of the paper clips. The other paper clip’s charge doesn’t change and it is not moved. How does the electric force between the paper clips change?

The electric force is quadrupled.

The electric force is reduced to a fourth of the original force.

The electric force is sixteen times bigger.

The electric force stays the same.

A negatively-charged plastic comb and a negatively-charged rubber balloon are brought closer together. How does the electric force between the comb and balloon change when they are brought closer together?

The electric force does not change.

When Micah takes his socks out of the dryer, he notices they are sticking to his shirt. Before the socks were run through the dryer, they didn’t stick to his shirt. Micah’s father notes that there is an electric force between his shirt and the socks. What could have happened to the socks in the dryer to cause this electric force?

His socks gained a net electric charge.

His socks lost a net electric charge.

The net electric charge of the socks did not change.

Dayana held two magnets near one another. She then changed their positions as shown in the diagram below. How did the magnetic force between the magnets change?

The magnetic force became stronger.

The magnetic force became weaker.

The magnetic force changed from repelling to attracting.

The magnetic force changed from attracting to repelling.

A group of students is studying two magnets, Magnet A and Magnet B. They notice a compass needle will point toward magnet A at a distance of 5 cm. However, at a distance of 7 cm, the compass needle doesn’t move. Magnet B will cause the compass needle to move at both 5 and 7 cm. What conclusion can be drawn?

Magnet B is stronger than Magnet A.

Magnet A is stronger than Magnet B.

Magnet A and Magnet B are of equal strengths.

Alma holds two magnets 10 cm apart. At this distance, it isn’t hard to keep the magnets from moving toward each other. Then, she holds the magnets 8 cm apart and notices that they are much harder to keep apart.

When magnets are moved closer to each other, the magnetic force increases.

When magnets are moved closer to each other, the magnetic force decreases.

When the magnets are moved closer to each other, the magnetic force does not change.

Two positively-charged rubber balls are on a table, rolling toward each other. How does the electric force between the balls change as they get closer together?

The electric force does not change.

8th Grade Final Exam Study Guide

Quiz

•

others

•

7th Grade

•

Practice Problem

•

Medium

Kara Donnelly

Used 15+ times

FREE Resource

83 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of Newton's Laws is also known as Inertia?

Newton's First Law

Newton's Second Law

Newton's Third Law

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a car travels 200km in 4 hours, they are going __________.

800 km

5 hours

40 km/h

50 km/h

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of Newton's Laws states An object in motion will stay in motion and an object at rest will stay at rest unless acted on by a force.

Newton's First Law

Newton's Second Law

Newton's Third Law

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of Newton's Laws states The acceleration of an object depends on the mass of an object and the amount of force applied to the object.

Newton's First Law

Newton's Second Law

Newton's Third Law

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A material through which electrons can move easily is a __________.

conductor

insulator

magnet

charge

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A ______________ is complete and electric energy flows through it.

closed circuit

open circuit

volt

electric current

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Magnets A and B are of equal magnetic strength. In which positions will magnets A and B have the greatest attractive force toward each other?

1

2

3

4

Create a free account and access millions of resources

Create resources

Host any resource

Get auto-graded reports

Continue with Google

Continue with Email

Continue with Classlink

Continue with Clever

or continue with

Microsoft

Apple

Others

Already have an account?

Popular Resources on Wayground

10 questions

Forest Self-Management

Lesson

•

1st - 5th Grade

25 questions

Multiplication Facts

Quiz

•

5th Grade

30 questions

Thanksgiving Trivia

Quiz

•

9th - 12th Grade

30 questions

Thanksgiving Trivia

Quiz

•

6th Grade

11 questions

Would You Rather - Thanksgiving

Lesson

•

KG - 12th Grade

48 questions

The Eagle Way

Quiz

•

6th Grade

10 questions

Identifying equations

Quiz

•

KG - University

10 questions

Thanksgiving

Lesson

•

5th - 7th Grade

Discover more resources for others

11 questions

Would You Rather - Thanksgiving

Lesson

•

KG - 12th Grade

10 questions

Identifying equations

Quiz

•

KG - University

10 questions

Thanksgiving

Lesson

•

5th - 7th Grade

18 questions

Thanksgiving Trivia

Quiz

•

4th - 12th Grade

20 questions

Thanksgiving Trivia!

Quiz

•

6th - 8th Grade

20 questions

Thanksgiving

Quiz

•

KG - 12th Grade

12 questions

Thanksgiving Trivia

Quiz

•

3rd - 8th Grade

2 questions

6W3 Week 4 Day 2

Quiz

•

7th Grade

8th Grade Final Exam Study Guide

83 questions

Which of Newton's Laws is also known as Inertia?

If a car travels 200km in 4 hours, they are going __________.

Which of Newton's Laws states An object in motion will stay in motion and an object at rest will stay at rest unless acted on by a force.

Which of Newton's Laws states The acceleration of an object depends on the mass of an object and the amount of force applied to the object.

A material through which electrons can move easily is a __________.

A ______________ is complete and electric energy flows through it.

Magnets A and B are of equal magnetic strength. In which positions will magnets A and B have the greatest attractive force toward each other?

Letters A, B , C and D represent locations on a bar magnet. Which location has the greatest magnetic force?

When the north poles of two different magnets are pushed together, they ______________.

True or False: All metals are magnetic.

Create a free account and access millions of resources

Popular Resources on Wayground

Discover more resources for others