hard black or dark brown substance that is found in the earth and burned as fuel.

minerals like iron or lead that are found underground in rocks.

the substance of trees which is used to make furniture

heat that comes from inside Earth

ielectricity that is made by the movement of water.

energy released from the nuclei of atoms

a flammable liquid made to run cars

any carbon-containing fuel formed from the remains of prehistoric plants and animals.

animals that lived in prehistoric time, 150 million years.

somewhat cold; not warm.

full of kindness; friendly.

the heat produced inside the earth.

hard black or dark brown substance that is found in the earth and burned as fuel.

a hard, clear material that breaks easily.

objects that have the power to pull items made of iron toward themselves.