Sign up for FREE

Unit 4, Lesson 2: Magnetism

Last updated about 8 years ago

13 questions

Note from the author:

10

10

10

10

10

10

10

10

10

10

10

10

10

McGraw Hill - Imagine It - 4th grade

Question 1

1.

Question 2

2.

Question 3

3.

Question 4

4.

Question 5

5.

Question 6

6.

Question 7

7.

Question 8

8.

Question 9

9.

Question 10

10.

Question 11

11.

How does the Earth act like a huge magnet?

Question 12

12.

Why is a magnetic train faster than an ordinary train?

Question 13

13.

In what form is iron usually found?

'Rarely' means about the same as

lightly.

not often.

surely.

not cooked.

The Earth has a hot iron 'core.' The 'core' of something is its

central part.

top.

warmest part.

length.

An electric 'current' can produce its own magnetic field. In this sentence, a
'current' is a

flow.

tide.

very thin wire.

unit of measurement.

There is no 'friction' from wheels on rails on a magnetic train. 'Friction' is

rolling.

a loud noise.

rubbing.

a force which uses no energy.

Opposite poles 'attract'. 'Attract' means

push apart

move toward one another

rails that are side by side

hamburger

What are most magnets made of?

plastic or rubber

iron or steel

air and water

dirt and water

What is the push or pull of a magnet called?

magnetic reaction

magnetic electricity

magnetic force

magnetic generation

What makes a compass work?

electricity from the air

the gravitational pull of the moon

the tides

Earth's magnetic force

Which of these has an electromagnet in it?

a doorbell

a dinner plate

a sofa

a paperclip

A North pole of a magnet will always be attracted to

the North pol of a magnet

B

the South pole of a magnet

D