Question

Which is a cost that comes with using coal as an energy source?

A.
When burned, coal produces pollutants that are released into the air.

B.
Coal will stay plentiful in the United States.

C.
Coal produces less energy than most other energy resources.

D.
Mining coal improves the environment.

Answer 1

A.

Answer 2

Which is related to air pollution in Mexico City?

A.
using hydropower

B.
burning fossil fuels

C.
using biofuels

D.
collecting natural gas

Answer 3

hey @dumbcow

Answer 4

hey @perl

Answer 5

hey @Zombrex

Answer 6

Which is related to air pollution in Mexico City?
B.
Which alternative energy source is used in Iceland?
C.

Answer 7

In which tool are uranium atoms split to make electricity?

A.
turbine

B.
generator

C.
reactor

D.
condenser

Answer 8

I think Reactor.

Answer 9

Which best describes how solar power is used for heating?

A.
Special cells store energy from the sun for later use.

B.
Heat from the sun causes a turbine to spin.

C.
The sun warms the ground from which heat flows into a home.

D.
The sun heats water stored within panels containing copper tubes, and then the water flows into a home.

Answer 10

A.

Answer 11

i only have a few more can you help

What is the purpose of the three R’s of resource management?

A.
to conserve resources

B.
to consume increasing amounts of natural resources

C.
to spread out landfill areas

D.
to remove resources from homes

Answer 12

I don't know what "R���������������������������s " means.

Answer 13

its is supose to R's
sorry

Answer 14

No worries mate. The answer is A.

Answer 15

Which statement comparing examples of renewable and nonrenewable resources is true?

A.
Geothermal energy is a nonrenewable resource because it can't be used up, but natural gas is a renewable resource because it will eventually run out.

B.
Geothermal energy is a renewable resource because it can't be used up, but natural gas is a nonrenewable resource because it will eventually run out.

C.
Both geothermal energy and natural gas are renewable resources because they will never run out.

D.
Both geothermal energy and natural gas are nonrenewable resources because they will eventually run out.

Answer 16

B.

Answer 17

Why is coal referred to as a fossil fuel?

A.
Coal was formed from decaying layers of plants in swamps millions of years ago. They fossilized into coal.

B.
Coal was formed from marine organisms millions of years ago. They fossilized into coal.

C.
Coal was formed from black shales that were uplifted millions of years ago and fossilized into coal.

D.
Coal was formed from marine sediments millions of years ago. They compacted and cemented into coal.

Answer 18

A.

Answer 19

Or B. They both would be correct.

Answer 20

Which describes how a turbine works to produce energy for electricity?

A.
The spinning turbine creates wind that drives the generator to make electricity.

B.
Energy from various sources, such as hydroelectric or from burning fossil fuels, is used to spin the blades of the turbine. The turbine then powers a generator, which produces electricity.

C.
The turbine collects wind energy to make electricity directly.

D.
The spinning turbine collects heat from decaying radioisotopes, and the heat energy drives the generator to make electricity.

Answer 21

B.