Earth Systems and Life

Water has a higher density in the solid phase than in the liquid phase.

• True, ice is a solid and it floats. High density should sink.
• False, ice is a solid and it floats. High density should sink.
• True, ice is a solid and it sinks. High density should sink.
• False, ice is a solid and it sinks. Ice is low density.

The high specific heat of water helps control the Earth's climate.

• True, areas by the beach have stable temperatures year round because they are next to a large body of water.
• False, water has nothing to do with climate.
• True, areas that are inland (not near water) have stable temperatures year round.
• False, water only has a tiny impact on climate

Typically, chemical weathering proceeds fastest in wet and cold regions.

• True, cold always speeds up reactions
• False, warm climates speed up chemical reactions

The process that occurs when physical forces break rock into smaller pieces without changing the rock’s chemical composition is called ____.

• Differential weathering, because the rock was broken
• Chemical weathering, because the rock wasn't changed
• Mechanical weathering, because the rock was broken
• Erosion, because the rock was moved

Which of the following weathering processes involves the constant freezing and thawing of water?

• Unloading
• Frost wedging
• Exfoliation
• spheroidal weathering

When water freezes, its volume ____.

• Decreases slightly
• Increases
• Stays the same
• Decreases greatly

Which of the following is the result of chemical weathering?

• a rock whose minerals are broken down into other substances
• a rock that has been broken into tiny pieces
• a rock that has been split in two
• a rock that has lost its outer layers

What process is illustrated by the number 2 in the image? (Hint: click the image to get the question out of the way).

• Precipitation
• Evaporation
• Run off
• Infiltration

In the image what process is illustrated by the number 2?

• Precipitation
• Evaporation
• Run off
• Infiltration

What is the energy source for the water cycle shown in the picture?

• Running water
• The sun
• Earth's internal heat
• Gravity