Unit 4: Magnetic and Electric Forces Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What are 3 subatomic particles that are atoms made of?

A

Protons
Neutrons
Electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

In electric force, what are 2 types of charges?

A

Positive & Negative

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Which are attracted? Which repel one another?

A
  1. Positive and Negative
  2. Positive - Positive, Negative - Negative
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Which way do the electric field lines of a positive atom point? What about a negatively charged atom?

A

A positive atom points outward and a negative atom points inward.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What 2 things does the size of the electric force depend on?

A

The amount of charge and the distance between the charges.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are 3 ways you can charge an object?

A

Friction, Conduction, Induction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Which one occurs by “wiping” from one object to another?

A

Friction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Which one is transferred by direct contact?

A

Conduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the difference between a conductor and an insulator? Give an example of each.

A

In a conductor, electricity can move through it easily. (Direct Contact); Copper
In an insulator, electricity cannot move as easily.; Plastic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Conduction

A

Transfer of electricity through direct contact.

Electrons move from one object to another through direct contact.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Friction

A

Electrons are “wiped” from one object onto another

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Induction

A

Charges in an uncharged object are rearranged without direct contact with a charged object.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

2 poles of a magnet

A

North and South

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which one repels? Which one attracts?

A
  1. North - North
    South - South
  2. North & South
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What happens when a magnet is cut in half? Does it become on the south pole and one north pole, or does it become a completely new magnet?

A

When a magnet is cut in half, it turns into 2 magnets both having a north and south pole.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

3 ferromagnetic elements that exist in the world

A

Iron, Cobalt, Nickel

17
Q

What areas of the magnet are the strongest?

A

Poles

18
Q

What is the Earth’s Magnetic Field called?

A

Magnetosphere; Protect Earth’s surface and its organisms from harmful solar particles by pulling most of the particles toward the magnetic poles. It also helps people and animals with navigation.

19
Q

Similarities between Electric & Magnetic fields

A

They both repel and attract. Force fields.