LUOA Science 9: Climate Change

Milankovitch cycles include: __________ (Select all that apply)

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Milankovitch cycles include: __________ (Select all that apply)

A cyclical wobble of the Earth on its axis
A cyclical change in the tilt of the Earth's axis
A cyclical change in the Earth's eccentricity

During normal conditions in the southern part of the Pacific Ocean __________ (Select all that apply)

Cold water is uplifted by upwelling
Tradewinds blow from east to west
Warm water is pushed away from South America

Sulfur dioxide from volcanoes mixes with water vapor, causing sulfuric acid, which __________ heat back into space

Which sources are factors in global cooling? (Choose 2)

1. La Niña events
2. Volcanic ash

What type of climate will the U.S. have during an El Niño event?

What was the pre-cursor to the big El Niño that occurred in 1997 that scientists are monitoring today?

Sea surface heights and temperatures

During El Niño, the trade winds weaken and warm water piles up __________

On the Southeast of the Pacific

Short-term global ocean surface cooling is called __________

Global cooling occurs when __________

The amount of insolation coming in is less than the amount of heat energy radiated back into space

Scientists believe that __________ caused the "Little Ice Age" in Europe in the Middle Ages

Decreased numbers of sunspots