EARTH SCIENCE # 2

___ class contains natural salts and includes fluorite, halite, slyvite and ammoniac components.

• Sulphate

• Carbonate

• Halide

• Silicate

____ are deposits of energy-rich organic molecules form dead organisms.

• Fossil fuels

• Fossils

• Oils

• Coals

____ refers to biological or plant and animal material used as fuel for the generation of electricity and other forms of fuel.

• Biomolecule

• Biomass

• Renewable Energy

• Nonrenewable Energy

____ are rocks that are formed due to exposure to high pressure, high temperature or combination of both.

• Metamorphic Rocks

• Sedimentary Rocks

• Igneous Rocks

______ is formed from plant material that has been subjected to heat and pressure.

• Petroleum

• Natural gas

• Oil

• Coal

_______  is the converted energy derived from the sun.

____ are natural substances consisting of aggregate minerals clumped together.

____ refers to those that have the potential to be cultivated

____ is the energy harnessed from the flow of the air.

About __ of Earth's surface is covered with water.

• 50%

• 60%

• 70%

• 80%