Energy

By the one who knows

Work

• Energy is the ability to do work

Energy Conservation

• Energy can not be created or destroyed but only changed from one form to another

• Don’t tell the poor sods in Hiroshima and Nagasaki that.

Forms of Energy

• There are many types of energy and most actions are a conversion of energy from one form to another.

Solar Energy

• Energy we get from the sun as radiation

Kinetic Energy

• Energy a body has because it is moving

Potential Energy• The energy that something has

due to its position or condition• High up• Wound up

Chemical Energy

• Energy stored in fuel and food.

Electrical Energy

• Both from batteries and the mains and…

Nuclear Energy

• Energy contained in the atom (Holding the nucleus together)

Heat Energy

• Energy due to temperature of the body. (The movement of the molecules)

Sound Energy

• Any kind of noise or music is waves of compressed air.

• It needs a medium to travel in.

Light Energy• Another type of

wave that does not need a medium.

• Travels in straight lines

• Can be REFLECTED by a mirror

• And REFRACTED by a Lump of glass

Nuclear

Light

Sound

Chemical

Potential

Kinetic

Heat

Solar

Electrical

Electrical EnergyHeat Energy + Sound

Energy

Nuclear

Light

Sound

Chemical

Potential

Kinetic

Heat

Solar

Electrical

Chemical Kinetic + Sound Potential

Nuclear

Light

Sound

Chemical

Potential

Kinetic

Heat

Solar

Electrical

Chemical Heat Kinetic + Light + Sound

Your Turn

• i-pod• Motor car• Hydroelectric Dam• Light Bulb

Non-renewable• Fossil Fuels• Limited and usually made 100

million years ago• Coal- Pressed trees• Oil – dead sea creatures• Gas – rotted vapour of above

Renewable

• I’m tired you have to do this…….List all renewable energy sources….h/w p

Summary