1.Periodic Glaciations are caused by:

a. Changes in the tilt of the Earths axis

b. Changes in the shape of the Earths Orbit

c. Increased precipitation

d. Decreased solar energy absorption

e. All of the above

 

2.The surface currents of the ocean:

a. Carry warm water to the poles

b. Carry cold water to the equator

c. Can move water away from a coastline

d. Are independent of the tides

e. All of these are correct

 

3.The ocean is maintaining a constant salinity because:

a. The fresh water from the rivers equals the amount of water evaporated from the oceans

b. Chlorine and sodium will not form a salt compound at normal ocean temperatures

c. glaciers are melting and adding fresh water to the system

d. Chemical reactions in the oceans combine elements into compounds that are stored in the biota or ocean sediment.

e. The ocean is actually increasing in salinity.

 

4. Some estimates indicate that the amount of the worlds fresh water that is stored as groundwater may be close to:

a. 98%

b. 57%

c. 10%

d. 1%

e. 0.01%

 

5. The residence time of a chemical in ocean water is:

a. The average time an element spends in the ocean before it is used in a chemical reaction

b. The same as a Milankovitch cycle

c. The amount of time a tropical storm can remain over the ocean before dying out.

d. The average length of time a molecule of water stays in the ocean.

e. The time it takes for one liter of water to move one horizontal mile through the ocean

 

6. What would be a typical effect that occurs during an ice age?

a. The ocean level drops

b. Ocean currents stop redistributing heat energy.

c. The snow absorbs rather than reflects solar radiation.

d. Large ice sheets cover the land from the poles to the tropics.

e. The ozone level increases.

 

7. The movement of heat by _____drives ocean currents.

a. Convection

b. Conduction

c. Radiation

d. All of the above

e. None of the above

 

8. What is the second largest reservoir of water on earth?

a. Groundwater

b. Glaciers and ice caps

c. Lakes and rivers

d. Atmosphere

e. Oceans

 

9. Substantial groundwater is stored in:

a. Underground lakes and rivers

b. Aquifers

c. Igneous rocks and volcanoes

d. All of the above

e. None of the above

 

10. ____flows in and out of all of Earth's systems.

a. Water

b. Oxygen

c. Energy

d. Matter

e. None of the above

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Status NEW Posted 20 Aug 2017 01:08 PM My Price 8.00

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