theme 9

Air can be used to make​ ​electricity which is a ​---------------  resource

• renewable

• electricity

• non renewable

• wind

Resources that cannot be replaced

• Conservation

• Natural Resource

• Non-Renewable Resource

• Renewable Resource

The surroundings in which people, animals, or plants live

• conservation

• environment

• trees

• renewable resource

Resources that can be replaced

• renewable resources

• ecological footprint

• non-renewable resources

• natural resources

A force can be defined as....

• A push or a pull

• Trying tp open a door

• A resistance force

• A pulling force

When two objects rub against each other, what will always be produced by friction is

• A rougher surface.

• light

• A smoother surface.

• heat

Racing cyclists wear specially shaped helmets and tight fitting clothes to....

• Be able to push harder on the pedals.

• Decrease air resistance

• Increase air resistance

• Just to look cool

When the parachute is opened the force opposing the parachutists fall slows him down. This is because the force opposing his fall....

• Stays the same

• Decreases

• Increases

• There is not force slowing him down

Ability to do work is known as?

• work

• force

• energy

• machine

A _______ is a material which allows electricity to flow through it.

• conductor

• wood

• energy