I expect that there is a rather wide range in the backgrounds of this class. Therefore, I am asking you to spend a few minutes answering the following questions so that I can begin to see what review material may be required. You are on your honor to answer the questions without recourse to any other materials.

Click on the answer bar to see the choices.

1. About how old is the Earth?

   about 5 billion years old about 2.5 billion years old about 1 billion years old about 500 million years old younger than any of the above answers

2. About when did the dinosaurs become extinct?

   250 million years ago 100 million years ago 50 million years ago 1 million years ago

3. About when did life first appear on Earth?

   about 2.0 billion years ago about 600 million years ago about 100 million years ago about 1 million years ago none of the above

4. At any place in the northern hemisphere, the north-seaking end of a bar magnet points:

   to the geographic north pole to the magnetic north pole both -- the two poles are identical

5. Global warming may be caused by:

   an increase in the size of the Ozone hole a decrease in the size of the Ozone hole an increase in the amount of carbon dioxide a decrease in the amount of carbon dioxide

6. the viscosity of a liquid is a measure of its:

   ease of flow resistance to flow density

7. The Earth is nearly spherical with an average radius of:

   7000 kilometers 3500 kilometers 2000 kilometers 1000 kilometers the Earth is a perfect sphere

8. Approximatey ______ % of the surface of the Earth is covered with water?

   90% 70% 50% 33%

9. Heat flows from a body at a higher temperature into a body at a lower temperature.

   True False

   

   On the diagram above the solid lines define the temperature and pressure boundaries for water, ice, and vapor. All three of these phases have the same composition: H₂O.

10. At 100 ^oC and atmospheric pressure water boils ... liquid goes to vapor. Water will boil at a higher temperature if:

    the temperature increases the pressure decreases the pressure increases none of these

11. Water freezes at 0^oC at one atmosphere pressure. If the pressure increases, the freezing point:

    goes up goes down stays the same

12. The Applachian Mountains are located:

    in the eastern part of the US in the western part of the US in the northern part of the US

13. The Andes Mountains are located in:

    western South America eastern South America eastern Europe western Australia

14. Which of these state is west of the Mississippi River?

    New Jersey Texas Ohio Kentucky Maine

15. About 1 million years ago thick sheets of ice covered much of Canada and the northeastern part of the US. This event had little or no effect on the Texas Gulf Coast.

    True False