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					    Lesson 1-3 Study Guide
1. What is a Catastrophic Event?
  A catastrophic event is a natural
   event that causes destruction.
2. List some examples of Catastrophic
  Tornadoes, hurricanes, volcanoes,
   earthquakes, etc.
3. What is a globe? What is a map?
  A globe is a spherical model of the
  A map is a flat representation of the
4. How do scientists take pictures of
  the Earth from space?
 They use satellites that orbit the
5. What does a tornado watch mean?
 A tornado watch means that
  tornadoes are possible.
  Thunderstorms that might produce a
  tornado are in the area.
6. What does a tornado warning mean?
 A tornado warning means that a
  tornado has actually been spotted or
  detected by radar.
7. What is a vortex?
 A vortex is a circulation of liquids or gases
  around a central axis.
8. What are some examples of vortices that
  occur in nature?
 Tornado, hurricane, dust devil, swirling leaves

9. What causes a vortex to form in the
 The uneven heating of the earth’s surfaces, the
  force of gravity, and the earth’s rotation can all
  cause vortices.
10. What is a thunderstorm?
 A thunderstorm is a disturbance in the
  atmosphere that causes thunder and lightning.
                Tornado                Hurricane
What is it?     A rotating column      A massive rotating
                of air that forms in   storm that forms
                a narrow path over     over tropical
                land.                  waters.
What causes When warm,                 When warm, moist
it to form? moist air meets            air rises over
                                       tropical waters.
            cool, dry air.
Where does      Tornado Alley in Tropical Oceans
it form?        the Central
                Plains of the U.S.
With what       Fujita Scale           Saffir/Simpson
scale can you                          Scale
measure its
15. Describe the heating and cooling
  rates of soil and water.
 Soil heats and cools quickly, whereas

  water heats and cools more slowly.
16. What is weather?
 Weather is the state of the
  atmosphere at a particular time and
17. What is climate?
 Climate refers to weather patterns

  that are characteristic of a region or
  place for many years.
18. What is the main source of the
  Earth’s heat?
 The sun / solar energy

19. In which layer of the
  atmosphere do we live?
 The Troposphere

20. By what three ways can heat be
 Radiation, conduction, and


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