Climate Change

Global warming is known as the gradual increase in _________________ of the atmosphere.

• precipitation

• sun spots

• temperature

• ocean currents

Climate changes may be linked to Maunder minimums which refers to the the low number of _______________ on the surface of the sun.

• sun spots

• air masses

• seasonal winds

• currents

Streams of water called ocean ____________ move warm or cold water, warming the nearby land.

• sun spots

• currents

• carbon dioxide

• air masses

Which of the following has caused repeating 100,000-year cycles of ice ages in the past?

• an increase in sun spots

• several major volcanic eruptions

• changes in Earth's orbit and the tilt of its axis

• continental drift

Which of the following is the best conclusion that can be made from this graph?

• atmospheric carbon dioxide levels have been decreasing since 1960
• Hawaii has a lot of carbon dioxide
• humans have been working hard to decrease carbon dioxide levels
• atmospheric carbon dioxide levels have increased steadily since 1960

The main human activity that releases greenhouse gases is

• using public transportation and there by reduce the affects of greenhouse gases.

• burning fossil fuels

• texting on cellphones

• eating meat

Which of the following is contributing to an INCREASE in carbon dioxide in the atmosphere?

• deforestation

• photosynthesis

• oceans

• all of the above

• the loss of animal species

In the 1800's why did CO2 levels increase significantly?

• New factories were being built that caused more pollution

• The civil war caused more pollution

• Scientists figured out how to clean up pollution in the air

• It did not increase

The diagram represents solar energy that is absorbed by Earth's land and water surfaces and is changed into heat that radiates back into the atmosphere. What is this process called?

• ozone

• radiation

• greenhouse effect

• evaporation

The season's are considered short term climate changes, what is the best explanation for these changes

• The angle of insolation is at its greatest during the summer months in the northern hemisphere.

• The angle of insolation is at its least during the summer months in the northern hemisphere.

• The angle of insolation is at its greatest during the winter months in the northern hemisphere.

• The angle of insolation is at its greatest during the winter months in the southern hemisphere.