Climate change

Climate in a region is

• the long-term, prevailing atmospheric conditions.

• determined only by seasonal daylight hours.

• the atmospheric conditions on a given day

• never affected by ocean currents.

Which of the following correctly states an observation that helps to explain circulation patterns in the atmosphere?

• Cold air rises and warms as it rises.

• Warm air rises and cools as it rises

• Cold air can hold more water vapor than warm air.

• All of the above

Latitude strongly influences climate because _____ solar energy falls on areas that are closer to the equator than to the poles

• less

• the same amount

• more

• sometimes less

Which of the following statements related to global warming is not accurate?

• Carbon dioxide levels have risen over the last 30 years.

• Only fossil fuels, not living plants, release carbon dioxide when burned.

• Global temperature and carbon dioxide concentration are related.

• By itself, reforestation is not sufficient to slow global warming.

The difference between global warming and climate changes is that

• climate change only occurs along the equator

• previous changes in climate were dramatic but very short-lived.

• human-made chemicals such as CFCs do not influence global warming.

• global warming is a consequence of climate changes.

During summer in the Southern Hemisphere, the Northern Hemisphere experiences

• a tilt toward the sun

• winter

• summer

• excess rainfall

Which of the following gases is most responsible for the greenhouse effect

• nitrous oxide

• methane

• oxygen

• water vapor

During an El Niño event, winds in the western Pacific Ocean strengthen and push ___________ eastward.

• warm air

• cold air

• warm water

• cold water

site where continuous CO2 records have been maintained since 1958

• Mauna Loa, Hawaii

• computer model

• carbon dioxide

• global warming

• zooplankton

Some of the warming that has been observed over the 20th century can be attributed to

• human activity

• glacial melting

• drought

• plant growth