SCIENCE 6to

The force that occurs through direct contact between objects. For example: rubbing.

• Contact Force

• Non-Contact Force

• Gravitational

• Friction

The force that occurs across a distance, without contact. Example: Magnetism.

• Contact Force

• Non-Contact Force

• Gravitational

• Friction

It's an example of Contact Force:

• Contact Force

• Non-Contact Force

• Gravitational

• Friction

It's an example of Non-Contact Force:

• Contact Force

• Non-Contact Force

• Gravitational

• Friction

All machines need _______ to work.

• Energy

• Lever

• Pulley

• Machine

Energy cannot be...

• Created or destroyed

• Transformed

• Transferred

• Stored

A lot of electricity comes from nonrenewable sources, for example:

(Select 2 answers)

• Coal

• Natural Gas

• Solar Energy

• Wind Farms

Nowadays is possible to generate electricity from renewable sources, for example:

(Select 2 answers)

• Coal

• Natural Gas

• Solar Energy

• Wind Farms

When an electric light bulb is turned on, it emits energy in the form of _____ and heat.

• Heat

• Sound

• Kinetic

• Light

An electric fan uses energy to turn its blades. This process transforms electric energy into ________ energy.

• Heat

• Sound

• Kinetic

• Light