UNIT 5- ELECTRICITY AND MAGNETISM

Question 1

What are the two charges?

Answer 1

Positive and Negative charges

Question 2

Which charge do PROTONS carry?

Answer 2

Positive

Question 3

Which charge do ELECTRONS carry?

Answer 3

Negative

Question 4

What made an object NEUTRAL?

Answer 4

The object carry an equal number of positive and Negative charge

Question 5

What happens if Two Neutral Objects are rubbed againts each other?

Answer 5

May PULL electrons away from the opposite body; resulting in two objects with two opposite charge.

Question 6

How can VALANCE ELECTRONS be transferred from one atom to another?

Answer 6

By rubbing two objects together

Question 7

Facts: The object that gains electrons becomes negatively charged and contains More electrons than protons

Answer 7

(This is just a fact)

Question 8

Facts: The object that loses electrons become positively charged and contains fewer electrons.

Answer 8

(This is just fact)

Question 9

What is CHARGING BY INDUCTION?

Answer 9

When one CHARGED object is brought CLOSE to one NEUTRAL object. Causing the different charges to separate. EX: LEFT SIDE OF A BALL IS NEGATIVE, WHILE RIGHT SIDE IS POSITIVE.

Question 10

What is the law of conservation of electrical charges?

Answer 10

Electrical charges can be neither created nor destroyed; They can only be transferred from one body to another.

Question 11

What do LIKE charges do?

Answer 11

REPEL each other

Question 12

What do OPPOSITE charges do?

Answer 12

ATTRACT each other.

Question 13

Facts: Charged object attract some neutral object

Answer 13

(This is just a fact)

Question 14

What is the path that electrons flow through?

Answer 14

Electrical Circuit

Question 15

What is the continuous flow of electrons in a circuit is called?

Answer 15

Current electricity

Question 16

What is Electric current?

Answer 16

The orderly flow of negative charges (electrons)

Question 17

What is Direct current?

Answer 17

Electrons that continuously move in the same direction.

Question 18

What is Alternative current?

Answer 18

Electrons change direction many times

Question 19

What produce alternating current?

Answer 19

Power plants

Question 20

What is Electrical circuit?

Answer 20

Network in which electrical charges can flow continuously in a loop.

Question 21

What is the three things an electrical circuit must contain?

Answer 21

• Power Supply
• Elements
• Wires

Question 22

What is Power Supply?

Answer 22

Creates a potential Difference or Transfers Energy to the electrical charges.

Question 23

What is elements?

Answer 23

Transform electrical energy in other forms of energy (RESISTORS, LOADS)

Question 24

What is Wires?

Answer 24

Connect the power supply and resistors.

Question 25

What is Resistance?

Answer 25

A substance that opposes the flow of electric current through it.

Question 26

Where does a magnet direct to?

Answer 26

ALWAYS from NORTH to SOUTH.

Question 26

How do you know how strong a Magnet is?

Answer 26

The CLOSER the lines are the STRONGER the magnetic field

Question 27

What is Magnetism?

Answer 27

All the phenomena caused by magnets

Question 27

Where do the direction from the magnets go?

Answer 27

ALWAYS from NORTH to SOUTH

Question 28

How can you determine the strength of a magnet?

Answer 28

It is shown by HOW CLOSE THE LINES ARE to each other. The CLOSER the lines of force are the STRONGER the magnetic field