Chapter Eight

happen when the temperatures are quite low. The lower temperatures are necessary for the moist air to begin to precipitate the snow.

8. Answer: a. For the most part, you will not see lake effect snows later in the wintertime because it has been cold enough to freeze the lake. It is impossible then to steal water from this frozen lake. Therefore, you cannot see lake effect snows.

9. Answer: d. Because of a rise in the thermocline during El Nino years, there are waters off Peru that are full of nutrients. Fishermen can then catch more fish during those years.

10. Answer: b. You will see each of these things in an El Niño year; however, you will not see increased rains or monsoon weather in Indonesia because there is less warm air coming there from the equator in the Eastern Pacific.

CHAPTER EIGHT

1. Answer: c. These letters indicate a maritime or moist air mass that comes from a tropical region. The only choice given that fits for this is the Pacific

Ocean.

2. Answer: a. You need to think about what these letters stand for. The C means that the air mass is coming from a continental region, while P means it is coming from a polar region. This will give you the letters CP.

3. Answer: c. You will see each of these conditions cold front is passing through; however, you will least likely see layered, stratiform clouds. Instead, you will more likely see thunder clouds.

4. Answer: a. Each of these features is true of the dryline, except that the moist air will be in the East and the dry air will be in the West.

5. Answer: b. The main region on earth where you will see a dry and hot source region is the Sahara Desert, which is big enough and stagnant enough to cause this.