Chapter 5 Earth’s Resources. What occurs when harmful materials get into the water, air, or land?

Chapter 5Earth’s Resources

What occurs when harmful materials get into the water, air,

or land?

Pollution

What is it called when we use our resources wisely?

Conservation

What can hardened tree sap become after a long time?

Amber

What is water that is held in soil and rocks underneath the

ground called?

Groundwater

What kind of resources are water, soil, and air?

Natural

Resources

What are the remains of plants and animals that lived long ago

called?

Fossils

What are rocks made of?

Minerals

What happens when water vapor cools?

Condenses into water droplets

What do cars need to run?

Fuel

How are igneous rocks made?

Melted rock cools and hardens

List three characteristics of topsoil.

It has lots of humus.

It has lots of minerals.

It holds water.

Give an example of a nonrenewable resource.

Metal

How long does it take to create fossil fuels?

Millions of years

In what type of rock are you most likely to find fossils?

Sedimentary

If a town needs more water what can they build that will

connect them to a water source?

An Aqueduct

In which layer of soil are crops planted?

Topsoil