Show:
Air and Water/minerals and rocks
Fossils and Energy
Fossils and energy/misc
Soil
Minerals and Rocks
100
A storage area for fresh Water
What is Reservoir
100
A source of energy other than the burning of fossil fuel
What is Alternatvie energy Source
100
Any remains or imprint of living things from the past
What is Fossil
100
A mixture of bits of rock and bits of once living plants and animals
What is Soil
100
The way a mineral reflects light from its surface
What is Luster
200
An Underground layer of rock or soil filled with water
What is Aquifer
200
A fuel formed from the decay of ancient forms of life
What is fossil fuel
200
The age of one rock or fossil as compared to another
What is Relative age
200
Saving, protecting, or using natural resources wisely
What is Conservation
200
How well a mineral resists scratching
What is Hardness
300
A solid, nonliving material of Earth's Crust with a distant composition
What is Mineral
300
A rocks age in years
What is absolute age
300
Long stretches of time used to measure Earths geological History
What is Era
300
The dark, top layer or soil, rich in humus and minerals, in which organisms live and most plants grow.
What is Topsoil
300
A rock made of compacted and cemented materials
What is Sedimentary Rock
400
A type of air pollution formed by particles produced by furning fossil fuels
What is Smog
400
A resource that can be replanted or replaced naturally in a short period of time
Renewable resource
400
The addition of harmful substances to the enviroment
What is Pollution
400
Decaysed plant of animal's material in soil
What is Humus
400
A rock that forms from another kind of rock under heat and pressure
What is Metamorphic rock
500
A form of oxygen gass that makes a layer in the atmosphere that screens out much of the Sun's ultraviolet rays.
What is Ozone
500
A resource that cannot be replaced within a short period of time or at all
Nonrenewable resources
500
A never-ending process in which rock changes from on kind into another
What is Rock Cycle
500
Any of the layers of soil from the surface to the bedrock
What is soil horizon
500
A rock formed when magma or lava cools and hardens
What is Igneous