Mechanical energy is the sum of _________ from the position and of _________ from the motion.

What type of energy is?

What type of energy is?

Light can't travel through wood, stone and metal.

Light can travel through clear glass and clean water.

Only some light passes through frosted glass.

__________ is when light bounces off a surface.

________ is when light travels at different speeds and changes direction.

_________ is when white light travels through a prism and it separates into differents colours.

Bathroom windows usually have transparent glass.

Sound vibrations can travel through different materials.

When the particles move quickly, thermal energy is ______

When the particles move slowly, thermal energy is_____

John cooks meat in a pan.

Alice heats milk in a microwave oven.

Paul turns up the heating to warm the air in the living room.

David sits in the sun to warm up.

My mother iron my clothes.

Electrical lamps transform electrical energy into________

Oven transforms electrical energy into _______

Computers transform electrical energy into _______

Coal, petrol and gas are __________ energy sources.

Sun, wind and water are _________energy sources.

Fossil fuels are ______ energy sources.