Science- Magnets

Question 1

Electromagnetism

Answer 1

Electric field between electrically charged particles.

Question 2

5 Variables of electromagnetic strength

Answer 2

1. Amount of electricity
2. Number of coil-turns
3. Amount of wire
4. Size of rivet
5. Tightness of coil

Question 3

How is electromagnetism created?

Answer 3

Through all flows of electricity.

Question 4

True or False: Steel is not an iron.

Answer 4

False

Question 5

True or False: FE is something that has iron in it.

Answer 5

True

Question 6

True or False: All metals can attract to magnets

Answer 6

False. Only things with iron can be attracted to magnets.

Question 7

What is the inner-most layer of the earth?

Answer 7

The core.

Question 8

What is the middle part of the Earth called?

Answer 8

The mantel.

Question 9

What is the outer-most part of the Earth called?

Answer 9

The crust.

Question 10

Where does Earth’s magnetic field come from?

Answer 10

The core.

Question 11

What is the mixture of metals in the core called?

Answer 11

Alloy.

Question 12

What three things does Earth’s magnetic field protect us from?

Answer 12

Solar flares, solar wind, and UVA/UVB rays.

Question 13

What is the Ozone layer?

Answer 13

It is a field around Earth that deflect solar winds.

Question 14

Name the five types of magnets

Answer 14

1. Alnico
2. Ferrite
3. Lodestone
4. Ceramic
5. Neodymium

Question 15

N and N attract

Answer 15

False

Question 16

S and S repel

Answer 16

True

Question 17

N and S attact

Answer 17

True

Question 18

What is the Magnes Legend?

Answer 18

A Greek shepherd named Magnes was walking through a field and noticed his iron staff was collecting rocks as he went along.

Question 19

What is a magnetic field?

Answer 19

The attractive space around a magnet that allows iron-based metals to stick to it.

Question 20

What are lines of force?

Answer 20

The lines that show where the magnetic field is.

Question 21

What is a variable?

Answer 21

A part of an experiment that can change the final conclusion.

Question 22

What is Alnico made of?

Answer 22

Aluminum, Nickel, Cobalt, and iron.

Question 23

What is Ferrite made of?

Answer 23

Rubber and iron

Question 24

What is Ceramic made of?

Answer 24

Pottery/clay and iron substances

Question 25

What is lodestone made of?

Answer 25

Minerals and iron

Question 26

What is neodymium made of?

Answer 26

Iron and borrin