(R)

Sun

The _____ is the source of almost all energy on Earth.

(R)

Light and Heat energy

(R)

The sun is directly the source of ______ and _____  ______.

(R)

 Energy

(R)

Sunlight, water and wind are sources of ________.

(R)

Electricity

(R)

______ can be generated by the force of flowing water or moving air (wind).

(R)

Wood

(R)

_______ comes from trees.

(S)

Renewable

(S)

Some energy sources are ________, that means they can be replaced.

(S)

Non-renewable

(S)

this means once they are used up, they are gone and cannot be replaced.

(S)

Water, wind and trees

(S)

______, ______, and _______ can be replaced because they are renewable sources of energy.

(S)

Coal, oil, natural gas

(S)

_______, _______ and _______ ____, cannot be replaced because they are nonrenewable sources of energy.

(S)

Decayed plants, animals

(S)

Coal, oil and natural gas are formed from _______ ______ and _____. They take millions of years to replace.