peys science junk

Which of these is the BEST example of the sustainable use of a natural resource?

?????

If the climate warmed, which of the following would be caused by rising temperatures?

an increase in sea levels

A disadvantage for using coal to produce energy is

It is not friendly to the environment causing pollution and global warming

Why is natural gas a better energy source than oil and coal?

It produces fewer greenhouse gases

What do geothermal and solar energy have in common?

Neither produces greenhouse gases

. In what ways do scientists study the history of Earth's climate?

by studying fossils, ice cores, and tree rings

The rain forests of the world trap a large amount of carbon dioxide, a greenhouse gas. Every year, however, more rain forest is cut down and burned, releasing huge amounts of carbon dioxide. Which graph BEST shows the likely effect on climate?

c

These graphs show human population growth (left) and emissions from burning fossil fuels for energy (right) since 1800. Fossil fuel usage is just one resource being impacted by a growing population worldwide. What are some other effects of increased use of natural resources? Select ALL that apply.

climate change, disruption of habitat, depletion of minerals and ores

As global temperatures rise, the global sea level is expected to rise in part because ________.

glaciers are melting at a faster rate

An increase in Earth's average temperature due to the buildup of carbon dioxide and other gases in Earth's atmosphere is called

global warming

What is one advantage of using geothermal as an energy source?

heat is captured under the earth, having low impact on the environment and low emissions

What two effects are scientists concerned about in relation to global warming?

increase in melting of ice, increase in carbon dioxide from melting permafrost

Which conclusion might be drawn between the relationship found in the graphs of Global Carbon Emissions and Global Temperatures over the past 150 years?

increased carbon emission from human activities are directly correlated to increased global temps

A disadvantage of solar energy is ______

it is weather dependent

Why is carbon dioxide considered a greenhouse gas?

it traps radiated energy in the atmosphere, which causes air temps to rise

Fuel made from plants are called biofuel. These fuels can be renewed in anywhere from 2 to 100 years depending on the plants used to create the fuel. Compared to fossil fuels, biofuels

takes a much shorter time to be renewed

Lily has a greenhouse in her back yard. The greenhouse effect in Earth's atmosphere works much like a greenhouse that houses plants. What is the difference between the air inside and the air outside of a greenhouse, and why?

the air inside the greenhouse is warmer than the air outside because of the trapped solar energy inside

A major disadvantage of nuclear power is____

the byproduct is radiation

Oil, coal, natural gas, and uranium are used to generate electrical energy. What is true about ALL of them?

they are finite or limited, resources

The attached bar graph shows how the average family uses water. Fresh water is a vitally important resource and its supply is limited. You want to try and help conserve this resource by cutting the usage of one of the fixtures above in half. To conserve the most water, which fixture should you choose?

toilet

. Non-renewable natural resources, like oil, take a very long time to form. That is one reason for the building of windmill farms that produce electricity from the wind's movement. What is another reason?

windmill farms produce energy without producing as much pollution

Oil, natural gas, and coal are considered to be nonrenewable resources. Why are these fuels considered to be nonrenewable?

These fuels are available in a limited supply, when the fuel is used it is no longer available

Oscar's family recently put solar panels on their roof to cut down on their use of electricity from the power company. How will alternative energy sources affect Earth's atmosphere?

They will reduce levels of greenhouse gases in the atmosphere

Hydropower creates energy by_____

Using the motion of water in a dam to turn turbines

Sustainable use is often defined as the use of natural resources at a rate that meets the needs of the present human population but which also allows future generations to use the resource to meet their needs. Which of these BEST illustrates the concept of sustainable use?

a logging company reseeds and replants in a forested area after cutting down trees for timber