Rocks
How do we decide how hard a rock is?
We use the Moh's scale of hardness
What is soil made of?
Minerals, Air, Water, Organic materials
Melted rock that cools and hardens
igneous rock
What is an example of a nonrenewable resource?
fossil fuel
To refer to a diamonds sparkle
Luster
A diamond has the hardness number of
10
Animals that aerate the soil (most common)
worms
Preserved evidence of a living thing from a long time ago
Fossil
Sap that can harden and encase an insect fossil is called
Amber
Useful materials that cannot be replaced easily
Nonrenewable resource
Where are the oldest layers of a rock located?
At the bottom
What do pore spaces do?
Helps to keep the water clean
Rocks formed by other rocks by heat and pressure
Metamorphic rock
Wood that turns to stone
Petrified
What is a fossil fuel?
an energy source formed millions of years ago
A mineral that is low on the Moh's scale is...
easy to scratch
how fast the water can flow is an example of
Permeability
Human made lake that is made to hold fresh water
reservoir
Who studies fossils?
Archaeologist
Describe topsoil
Rich in humus & minerals. Home to many living things
Limestone changes into ____________.
Marble
Nutrient rich food for plants
Humus
building blocks of rocks
minerals
How does pollution such as acid rain happen?
From the overuse of fossil fuels
Water stored in pore spaces and cracks in underground rocks
Groundwater