Magnetism Test

Question 1

What is the definition of Magnetism?

Answer 1

The force of attraction ( come together) or repulsion (pull part) between the pole of a magnet and another object.

Question 2

True or False? Every magnet has a North and South Pole?

Answer 2

True

Question 3

Where is the force of attraction the greatest?

Answer 3

At the poles ( when the atoms are lined up)

Question 4

Where is the force of attraction the weakest?

Answer 4

In the middle.

Question 5

True or false? Opposite poles attract.

Answer 5

TRUE

Question 6

True or False? Like poles repel ( push away).

Answer 6

TRUE

Question 7

True or false? Iron, Nickel, Cobalt, and magnetite are magnetic?

Answer 7

True

Question 8

What happens when you hit or use extreme heat on a magnet?

Answer 8

It will disrupt the atoms therefore destroying the magnet.

Question 9

True or false? When a magnet s broken, the new magnet will each have a North and South pole but they will be weaker.

Answer 9

True

Question 10

What do closer magnets create?

Answer 10

A stronger magnetic force.

Question 11

What is the magnetic field?

Answer 11

It is the invisible lines of force that surround a magnet from one pole to the next.

Question 12

What is the magnetic compass?

Answer 12

It contains a magnet that interacts with the earth’s magnetic field. It aligns itself to point to the magnetic poles.

Question 13

What is an electrical circuit?

Answer 13

A network consisting of a closed loop, giving a return path for the current.
( a complete path through which electrical charges can flow)

Question 14

What is an electric current?

Answer 14

A flow of a charge through a material

Question 15

What is an ampere?

Answer 15

A unit of an electric current.

Question 16

What is a conductor?

Answer 16

Allows electricity to flow easily ex: copper, iron, aluminum, gold metal.

Question 17

What is an insulator?

Answer 17

Do not allow electricity to flow easily thru it. Ex: wood, rubber, plastic, glass.

Question 18

A substance can have the following 6 things:

Answer 18

-A positive charge ( proton)
-A negative charge ( electron)
-No Charge ( neutron)
-Opposite electrical charges will attract each other.
-Similar electrical charges will repel each other.
-Charges look to neutralize each other or become neutral.

Question 19

What are 3 reasons someone might get shocked when touching something?

Answer 19

• when a static charge has accumulated ( builds up) on an objet, the object wants to become neutral.
  -If an object with an opposite charge is close, a static discharge occurs.
  -This transfers its charge into another object in order to become neutral.
  Examples: carpets, dryer, lightening ( discharge of electricity).

Question 20

Why does lightening occur?

Answer 20

-Lightening is the extreme form of static discharge.
-Negative & positive charges separate in a cloud.
-A discharge from negative to positive occurs ( an example of static electricity).
-The negative charge in the cloud meets the positive charge on he ground and a lightning bolt occurs.