Exam 14: Climate Change

Much of Canada's agricultural production is from the Palliser Triangle in southern Alberta and Saskatchewan.Geological data from the past 2000 years indicate that agricultural production in this region could be vulnerable in the future due to

Your great-great grandmother may have written on her wedding photos about the weather on the day of her wedding.What type of data would this be?

Compare sea level today with sea level during the last ice age.

18,000 years ago,most of Canada was covered by ice.

The most recent period of growth and melting of ice sheets began

Nitrogen,oxygen and methane are all permanent gases.

If the ocean conveyor belt shut down,northern Europe would be 5 degrees C to 10 degrees C warmer than it is today.

The total increase in mean temperature since the late nineteenth century

If all the ice on Greenland melted,sea level would rise by more than 100 m.

Most of the increase in global temperatures over the past century or so can be attributed to natural changes in the Earth's tilt,orbit and wobble.

Weather refers to the characteristic atmospheric conditions over years or decades.

Why are aerosols important in the hydrologic cycle?

When the Earth warms,won't the areas that we lose to agriculture (like the U.S.Midwest)just be replaced by new areas that are now too cold for farming (like Northern Canada)?

Under what orbital conditions is precession of the equinoxes irrelevant to climate change?

An increase in atmospheric carbon dioxide may lead to ocean acidification.

Which of the following is NOT a source of carbon dioxide for our atmosphere?

Though the extent of sea ice has decreased since the 1970s,its thickness has remained consistent.

Which of the following is NOT a typical hazard involved with glaciers?

Infrared radiation emitted from the Earth is absorbed and re-emitted by greenhouse gases in the atmosphere.

The interglacial interval we live in today is called