Work and Energy Jan 9

Energy is required to do _____________

• work

• nothing

• everything

Sources of energy that can be replaced in our lifetime's are called

• non-renewable

• renewable

Hydropower accounts for _____ of the US' energy.

• 1%

• 6%

• 20%

• 50%

Ethanol is a ________________

• nuclear energy

• wind energy

• hydropower energy

• biomass energy

We get our electrical energy by converting mechanical energy into electrical energy by means of a ________________.

• nuclear reactor

• combustion engine

• generator