Natural Causes for Climate Change

Natural Causes for Climate Change

Multiple Choice

How much does global temperatures decrease during an "Ice Age"?

• 100^oC

• 50⁰C

• 10⁰C

• 5⁰C

Multiple Choice

Which of the following has been associated with causing "Ice Ages" to occur?

• The Sun and Moon tugging on Earth, causing the Earth to "wobble" as it rotates around on its axis.

• The formation of Central America that resulted in a separation in ocean currents between the Pacific Ocean and the Atlantic Ocean.

• Both of the previous

• None of the previous

Multiple Choice

When did the last "Ice Age" end?

• About 100 years ago

• About 1,000 years ago

• About 10,000 years ago

• About 100,000 years ago

Multiple Choice

What major North American geological features were formed as the glaciers melted, at the end of the last "Ice Age"?

• Grand Canyon

• Niagara Falls

• The Blue Ridge Mountains

• Mount Saint Helens

Multiple Choice

Which of the following best describes El Nino?

• A change in rain amounts due to a high pressure system setting in and remaining.

• A change in rain amounts due to a low pressure system setting in and remaining.

• A shift in wind patterns and ocean surface currents that affect weather patterns across the globe.

Multiple Choice

In what direction do the trade winds blow?

• East to West

• North to South

• South to North

• West to East

Multiple Choice

On which side of the Pacific Ocean are warm surface currents found?

• Eastern side

• Western side

• Northern side

• Southern side

Multiple Choice

Which of the following best describes what "upwelling" means?

• Cool, nutrient rich waters rising to the surface to replace warm water that is pushed away by the wind.

• Warm, nutrient rich waters rising to the surface to replace cold water that is pushed away by the wind.

Multiple Choice

Under normal conditions, how does the convection cell in the Pacific Ocean work?

• Cold air rises on the western and warm air sinks on the eastern side of the Pacific Ocean.

• Warm air rises on the western and cold air sinks on the eastern side of the Pacific Ocean.

• Warm air rises on the eastern and cold air sinks on the western side of the Pacific Ocean.

Multiple Choice

What happens to the trade winds, during El Nino?

• They reverse directions

• They grow weaker

• The grow stronger

• All of the above

Multiple Choice

What occurs along the coast of South America, is associated with El Nino?

• Drought

• Wildfires

• Flooding

• Hurricanes

Multiple Choice

What occurs along the coast of Australia, during El Nino?

• Flooding

• Hurricanes

• Drought

• Snow

Multiple Choice

What is one benefit that El Nino provides?

• Less hurricanes

• Less drought

• Less hurricanes

• Less wildfires

Multiple Choice

Which of the following has also been associated with short-term changes in our global climate?

• Volcanic Activity

• Sunspot Activity

• Both of the previous

• None of the previous

Multiple Choice

How does a greenhouse stay warmer than the outside environment?

• Light waves travel through the glass and turn into heat waves that cannot escape back out through the glass.

• Heat waves travel through the glass and become trapped.

• Both of the previous

• None of the previous

Multiple Choice

Why do call the warming of our atmosphere the greenhouse effect?

• Because, just like in a greenhouse, heat waves travel through the atmosphere and become trapped.

• Because, just like in a greenhouse, light waves travel through our atmosphere, turn into heat waves and become trapped.

Multiple Choice

Which of the following are the two main greenhouse gases?

• Carbon Dioxide and Methane

• Carbon Dioxide and Ozone

• Carbon Dioxide and Water Vapor

• Carbon Dioxide and chlorofluorocarbons

Multiple Choice

Why is it said that Venus experiences a run away greenhouse effect?

• Because it has less carbon dioxide in the atmosphere and so the temperatures on Venus are lower

• Because most of the atmosphere on Venus consists of carbon dioxide, so it is really hot on Venus

• All of the previous

• None of the previous