Earth Science Unit 5

Why are fossil fuels considered nonrenewable resources?

It takes 500 million years for reserves to form.

How can you tell that a country's population has had a baby boom?

Look for a bulge in an age-structure diagram.

In the absence of social factors, which of the following statements is most accurate?

Needs are less than resources, and the population increases.

Which statement is true?

Nonrenewable resources are used at a rate faster than they can be replenished.

If death rates exceed birth rates and migration rates do not change, then what will happen to the population?

The population will decrease.

What characteristic do fossil fuels, soil, and sunlight all share?

They are all natural resources.

Which of the following is an example of a nonrenewable resource?

coal deposit

Which activity would be carried out by a conservation biologist?

conduct survey of a species population in an ecosystem

Which of the following is not a fossil fuel?

copper

Which of the following is a reason not to extract mineral resources from the ground?

it can cause air, soil, or water pollution

Which of the following is a good reason to extract mineral resources from the earth?

it makes the resource available for use

Sustainable agriculture has which of the following impacts?

less cropland is lost

Which of the following describes what can happen to the areas upstream of a hydroelectric dam?

loss of homes to lake formation

About how long does it take to form fertile soil?

1,000 years

How can population density affect population growth?

Areas of high population density will have greater needs and may deplete available resources.

Which president established the U.S. Environmental Protection Agency?

Richard Nixon

Why is wind energy controversial?

Wind energy can harm migrating birds.

What is an ore?

a rock that contains a metal resource

To halt the decline in biodiversity, we must do which of the following?

adopt ecological conservation practices

Which of the following is the most common use for water worldwide?

agriculture

Use of fossil fuels contributes to which of the following?

air pollution, water pollution, and global warming

What impact does sustainable living have?

air, soil, and water quality are protected

In Hawaii, the mongoose was brought to the islands to control the snake population. It thrived, and now the mongoose population is rampant. Which threat to biodiversity describes this situation?

alien species

Which of the following is a mixture of two or more metals?

alloy

Droughts can influence which of the following?

both the resources and population

How can water be used for energy?

by placing dams in tidal areas

Burning fossil fuels releases which of the following into the atmosphere?

carbon dioxide

Which of the following is a limit on population growth?

carrying capacity

What separates one watershed from another?

divide

Which term describes a metal found in an uncombined form?

native element

Which of the following is a nonrenewable resource?

oil

What is a strategic mineral?

one that must be imported to the U.S.

Which activity stresses the demand side of water supplies?

overpopulation

Setting fires in a forest is sometimes used to __________.

protect the larger trees from larger fires

Which term describes the restoration of the land to its original state?

reclamation

Which of the following examples is a way to live sustainably?

recycle and reuse materials

What type of resource is the sun?

renewable resource

Which nonmetal is used as a food?

rock salt

Which of the following is one way that soil can be managed properly?

rotate crops

Which process melts an ore to separate useful metals from the rest of the elements in the ore?

smelting

Which type of mine involves digging tunnels and shafts deep underground?

subsurface mine

Which type of fire is sometimes set as a way to protect a forest?

surface fire

Which of the following is not a natural resource?

synthetic diamonds

Which statement describes nuclear fission?

the splitting of a nucleus

Which phrase best completes the sentence? Renewable resources are __________.

things that can be naturally replaced in a short period of time.

Which of the following is an example of something that can promote sustainable development?

using solar panels for heat

Which of the following is a renewable resource?

wind