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magnetism - week 9

Total questions: 20

Worksheet time: 18mins

Name
Class
Date
1.
A _________ is a device that produces magnetism by spinning a coil of wire around a nail.
a)
Generator
b)
Electromagnet
c)
Battery
d)
Galvonometer
2.
Solenoids and Electromagnets use _________ to create Magnetism
a)
Magnetism
b)
Electricity
c)
Wires
3.
Generators use __________ to create Electricity
a)
Electricity
b)
Magnetism
c)
Wires
4.
You can make an electromagnet stronger by...
a)
increasing the current through the wire
b)
make the iron core bigger
c)
increase the number of loops around the core
d)
All of these
5.
What will happen when these magnets are brought close together?
a)
They will attract each other.
b)
They will repel each other.
c)
Both magnets will turn to the left
d)
Both magnets will turn to the right
6.
A magnet will attract scissors if the scissors contain: 
a)
copper
b)
aluminum
c)
gold
d)
nickel
7.
What happens when two north poles of a magnet are placed together?
a)
they repel
b)
they attract
c)
they cancel each other out
d)
the strength of the magnet is doubled
8.
Which two metals will be attracted by a magnet?
a)
iron and steel
b)
gold and silver
c)
aluminum and lead
d)
copper and cobalt
9.
How is a permanent magnet DIFFERENT from a temporary magnet?
a)
A permanent magnet attracts materials made of iron.
b)
A permanent magnet has poles.
c)
A permanent magnet has a magnetic field.
d)
A permanent magnet keeps its magnetism for a long time.
10.
Earth acts like a giant magnet because its center is made up MOSTLY of
a)
granite
b)
limestone
c)
iron
d)
nickel
11.
Earth's magnetic field and a bar magnet attract particles to the same locations. Where are they?
a)
The middle
b)
All around the outside
c)
The north and south poles
d)
First to the middle, then to the ends
12.
Where is Earth's magnetic field strongest?
a)
Along the outside lines
b)
Along the inside lines on either side
c)
Where the lines are close together at the poles
d)
In the space outside of the lines
13.
Why does a compass needle point north?
a)
The compass is a bar magnet
b)
Because north is up
c)
Because it's magic
d)
It lines up with the Earth's magnetic field
14.

Magnetism is generated by moving __________.

El magnetismo se genera al mover _____________.

a)

protons.

b)

electrons.

c)

neutrons.

d)

elements.

15.

What do the lines around this magnet represent?

¿Qué representan las líneas alrededor de este imán?

a)

North Pole

b)

South Pole

c)

Magnetic Declination

d)

Magnetic Field

16.

As the distance between two magnets increases (they get farther apart), the force between them:

A medida que aumenta la distancia entre dos imanes (se separan más), la fuerza entre ellos:

a)

Increases

Aumenta

b)

Decreases

Disminuye

c)

Stays the Same

Se mantiene igual

17.

If the North Pole of a permanent magnet is placed next to a compass as seen in the picture, which direction will the needle move?

Si el Polo Norte de un imán permanente se coloca junto a una brújula como se ve en la imagen, ¿en qué dirección se moverá la aguja?

a)

To the right (away from the magnet)

A la derecha (lejos del imán)

b)

To the left (towards the magnet)

A la izquierda (hacia el imán)

c)

It will not move

No se moverá

d)

Need more information

Necesitas más información

18.

Where is the magnetic field strongest around a bar magnet?

a)

in the middle

b)

at the poles

c)

same everywhere

d)

where the field lines are far apart

19.

What does the direction of the pointing fingers mean in this picture?

a)

the direction of the voltage

b)

the rotation of the wire

c)

the direction of the magnetic field

d)

the direction of the current

20.

Which image has the most potential energy in the system of magnets?

a)

A

b)

B

c)

C

d)

D