Chapter 8 Review

1. Chapter 8 Review Let’s get an “A” on the Test!

2. Chapter 8 Review • What causes winds? • What is humidity? • Winds are caused by differences in air pressure. • Humidity is a measure of the amount of water vapor in the air.

3. Chapter 8 Review • There are four main types of fronts. What are they? Describe each. • There are also four main parts to the water cycle. What are they? How do they create a cycle? • Cold, warm, stationery, and occluded • Evaporation, condensation, precipitation, and runoff.

4. Chapter 8 Review • Name the five types of precipitation. • What does the suffix nimbusmean? • What does the word cumulus mean? • What does the word cirrus mean? • What does the word strato mean? • Rain, snow, sleet, hail, and freezing rain • Rain • Heap or mass • A curl of hair • Spread out

5. Chapter 8 Review • What is the name for the giant “thunderhead” type of cloud? • What is the name for the clouds that form at or near the ground? • What is needed to make a cloud? Condensation of water molecules and ______________ • Cumulonimbus • Fog • Tiny particles on which the molecules can condense.

6. Chapter 8 Review • The temperature at which condensation begins is called the _____________ • Where do hurricanes typically form? • Dew point • They typically form over areas of warm ocean water.

7. Chapter 8 Review • What causes tornadoes? • Where do most tornadoes occur? • Usually they are caused when a warm, humid air mass meets a cool, dry air mass. • Tornado alley on the Great Plains of the Unites States

8. Chapter 8 Review • What type of clouds are associated with tornadoes? • What is lightning? • Cumulonimbus • Lightning is a sudden spark, or electric discharge between clouds or between clouds and the ground

9. Chapter 8 Review • What is the name for a Scientist who studies the causes of weather? • On a weather map there are often the letters L and H. What do they mean? • What are the lines that connect areas of the same temperature called? • A Meteorologist • Areas of low and high pressure • Isotherms

10. Chapter 8 Review • What are the lines that connect areas of the same air pressure called? • Very large tropical cyclones with high winds are called ____________ • The calm center of a hurricane is called the __________. • Isobars • Hurricanes • Eye

11. Chapter 8 Review • What should you do if you are caught in a snowstorm? • Cover exposed parts of your body and try to stay dry. Only run the car engine if the exhaust pipe is clear of snow.

12. Chapter 8 Review • What should you do if you are in the path of a tornado? • Go into the basement or storm shelter. Stay away from windows and doors to avoid flying debris. If you are outdoors, lie flat in a ditch.

13. Chapter 8 Review • How can you stay safe during a thunderstorm? • Avoid places where lightning may strike such as under a tree. Also avoid objects that can conduct electricity, such as metal objects and bodies of water. If you are outdoors, stay low and avoid trees, fences and poles.

14. Chapter 8 Review • How can you stay safe if you are caught in a hurricane? • Listen to the warnings and evacuate the area when told to do so.