Quiz about Review of Magnetism

Question 1

What kind of force can be created with an electrical current?

Accepted Answer

magnetic force.

Answer

chemical force

Answer

nuclear force

Answer

frictional force

Question 2

A student wants to use a magnet to pick up a sheet of metal, but his magnet is too far away to attract. What is a possible solution?

Accepted Answer

use a bigger magnet to increase the size of the magnetic field

Answer

turn the magnet around and use the opposite pole instead

Answer

turn the magnet around and use the opposite pole instead

Answer

turn the magnet so that the middle is pointed toward the metal

Question 3

What variables determine the gravitational force between two objects.

Accepted Answer

mass, distance

Answer

mass, volume,

Answer

volume, magnetism

Answer

mass, magnetism

Question 4

What will happen when these magnets are brought close together?

Accepted Answer

They will repel each other.

Answer

They will attract each other.

Answer

Both magnets will turn to the left

Answer

Both magnets will turn to the right

Question 5

How is Earth's magnetic field similar to that of a magnet?

Accepted Answer

It has north and south poles

Answer

It is hundreds of miles long

Answer

It is made in Earth's core

Answer

It is shaped like a horseshoe

Question 6

A magnet will pick up a nail, but not a penny because the nail

Accepted Answer

contains iron

Answer

has rust on it

Answer

has a sharp point.

Answer

is lighter than the penny

Question 7

Magnetism is a type of ____________

Accepted Answer

force

Answer

matter

Answer

book

Question 8

The lines on this image are called..

Accepted Answer

magnetic field lines

Answer

iron filings

Answer

graphite lines

Question 9

The magnetism of a piece of magnetized iron can be weakened by

Accepted Answer

heating the iron and hammering it

Answer

putting it near a piece of unmagnetized iron

Answer

bending the iron

Answer

cooling it

Question 10

A student claims that invisible fields exist between objects that are not in contact. Which two arguments best support her claim?

Accepted Answer

A magnet attracts a paper clip causing it to move toward the magnet.

Accepted Answer

Two positively charged balloons repel each other when they are brought close together.

Answer

A ball rolls more slowly on a bumpy road than on a smooth road.

Answer

A light bulb becomes lit when a switch is flipped to close a circuit

Answer

The bottom of a box becomes warm after being pulled across a carpet

Question 11

What is produced by a stream of electrons flowing through a wire that is coiled around an iron core?

Accepted Answer

a magnetic field

Answer

an atomic field

Answer

a radiation field

Answer

a static field

Question 12

Robert wants to use a magnet to pick up a sheet of metal, but his magnet is too far away to attract. What is a possible solution?

Accepted Answer

Get a bigger magnet, because the magnetic field will be larger.

Answer

Turn the magnet around and use the opposite pole instead

Answer

Get a smaller magnet, because the magnetic field will be smaller.

Answer

Turn the magnet so that the middle is pointed toward the metal.

Question 13

As the distance between an object and a magnet increases, what happens to the force of the magnetism?

Accepted Answer

it decreases

Answer

it increases

Answer

it stays the same

Answer

it becomes stronger

Question 14

How would the gravitational force between Earth and the Moon change if the distance between the two objects doubled, but all other factors stayed the same?

Accepted Answer

The gravitational force between Earth and the Moon would decrease by a proportional amount.

Answer

The gravitational force between Earth and the Moon would increase by a proportional amount

Answer

The gravitational force between Earth and the Moon would completely disappear.

Question 15

The law of conservation of charge states that _____.

Accepted Answer

electric charge is not created or destroyed only transferred from object to object

Answer

charge is not created or destroyed or transferred from object to object

Answer

the mass of all substances present before a chemical change equals the mass of all the substances remaining after the change

Answer

charge can be created and destroyed but cannot be transferred

Question 16

What is the difference between charging by conduction and charging by induction?

Accepted Answer

During conduction, charges move between touching objects; during induction, charges are rearranged within an object that is near another object.

Answer

During conduction, charges move between objects that briefly touch; during induction, charges move between objects that are rubbed together

Answer

During induction, charges move between objects that briefly touch; during conduction, charges move between objects that are rubbed together.

Answer

During induction, charges move between touching objects; during conduction, charges are rearranged within an object that is near another object.

Question 17

The Sun is the center of our solar system, which includes planets, dwarf planets, asteroids, and comets. Which statement best explains why all objects, including planets, orbit the Sun, instead of the Sun orbiting one or more planets?

Accepted Answer

Planets have less mass than the Sun.

Answer

The Sun rotates faster than any of the planets.

Answer

The Sun formed before the planets or other objects.

Answer

Planets are further from the center of the solar system.

Question 18

A student claims that a magnetic field can affect objects that are not in direct contact with each other. Which argument best supports the students claim?

Accepted Answer

A compass needle points to the north from any location

Answer

A ball rolls downhill and eventually comes to a stop

Answer

A light bulb becomes hot to the touch after being lit

Answer

A lighting bolt releases a charge from the sky to the ground

Question 19

A circuit contains four light bulbs. One light bulb goes out but the other three stays lit. This must be a(n)____________________ circuit.

Accepted Answer

parallel

Answer

closed

Answer

open

Answer

series

Question 20

What term below best describes the circuit pictured?

Accepted Answer

open

Answer

alternating current

Answer

closed

Answer

parallel

Question 21

A material in which electrons are able to move easily or freely is a(n) ______.

Accepted Answer

conductor

Answer

insulator

Answer

electric field

Answer

none of these

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