Grade 9 : Physics

Front 1

Electricity 4 laws

Back 1

-Everything contains electric charges

-Charges cannot be created but can move around

-Rubbing 2 objects together causes electrons to

jump from one object to another.

- An object can become charged when the number of protons does not equal the number of electrons.

Front 2

Types of Charges

Back 2

Positive - more protons than electrons

Negative- more electrons than protons

Neutral- Equal number of protons and electrons

Front 3

Static Electricity

Back 3

Electricity that does not move.

This type can jump very small distances

Front 4

Current Electricity

Back 4

Involves the movement of electrical charges along a controlled path.

Front 5

Do Neutral Objects lack charge?

Back 5

Neutral objects contain charges, however they have an equal number of protons and electrons.

Front 6

Electrons can move...

Back 6

from atom to atom

Front 7

Insulators

Back 7

A substance in which electrons cannot move freely from atom to atom

Holds electrons tightly

Charge remains on the surface

Protect against electrical shock

Front 8

3 Examples

Back 8

Wood

Glass

plastic

Front 9

Conductors

Back 9

A substance in which electrons can move freely from one atom to another

Holds electrons loosely

Never accumulate negative charges

Front 10

3 Examples

Back 10

Copper

Gold

Silver

Front 11

3 Examples of Fair conductors

Back 11

Human body

Carbon

Earth

Front 12

Electric Circuits

Back 12

Controlled path in which electricity flows

Front 13

Electric Current

Back 13

The movement of the electric charges (Electrons) from one place to another.

Front 14

Parts of a circuit

Back 14

1.Source of Electrical Energy

2.Electrical Load

3. Control device (switch)

4.Connectors- (wires)