Chapter 4 Earth Science

What area of the US has maintained the largest percentage of its virgin forest?

The west

One way that mining for mineral resources damages land is by

increasing soil erosion

Compost helps preserve the health of soil because it

is a natural fertilizer

The greenhouse gas carbon dioxide helps to

maintain warmth near Earth's surface

Which of the following is not a land resource

methane

Explain the difference between renewable and nonrenewable resources.

Renewable resources can be reused unlike nonrenewable resources that take millions of years to go away.

What do these maps show?

Show how much of the forests have decreased from 1620 to 1998

Describe the advantages and disadvantages of wind as a source of electricity.

Some advantages to wind electricity is that you will almost always have electricity.

How does conserving energy help control air, water, and land pollution?

This will help so we have more in the future when we need it.

How can individuals use resources in a way that helps better preserve forest resources.

To start recycling and use natural produces.

Renewable resources

can be replenished over months, years, or decades

Hydroelectric power is produced by

falling water that turns a turbine

The major source of air pollution that disrupts the atmosphere's natural cycles is the combustion of _______ fuels

fossil

Which of the following is not a major use of freshwater resources?

fuel for transportation

Earth's atmosphere is a mixture of _________, oxygen, water vapor, and other gases

hydrogen

The advantages of solar energy include that fact that it is

nonpolluting

Fossil fuels are _________ resources

renewable

The fuel for nuclear fission in nuclear reactors is

uranium

Which of the following is not a fossil fuel?

uranium

What is the source of geothermal energy?

very hot minerals deep underground