1. Science 9 Review for Severe Weather

2. 1. A funnel shape cloud that touches the earth surface________.
tornado

3. 2. The number of tornados that occur in the USA each year is about
800
1000 80
300

4. 3. Mountains have ______________ climates because there is less air molecules to hold the heat at high elevations
warmer
More sun
colder
more rain

5. 4. To be classified as a hurricane, a tropical storm must have winds of at least
_____________.
139 km/hr.
119 km/hr.
100 km/hr.
75 km/hr

6. 6. Elevations and landforms are factors that determine an area’s _____.
topography.
biology
atmosphere
Watershed

7. 7. The eye of the hurricane is __________
calm

8. 9. How does lake effect snow occur?
Cold air blows over a large lake then over land. It picks up the moist air and creates excess snow for coastal cities.

9. 10. When a warm air mass and a cold air mass meet and there is no movement, the result is __________ producing what _______________type of weather.
A stationary front
Rainy over an extended period of time

10. 11. A rapidly moving cold air mass runs into a slow moving warm air mass, resulting in _________ and producing ________ type of weather.
Occluded front
Stormy, rainy

11. 13. A landform that has a high elevation and a more or less level surface
plateau

12. 14. Plateaus, plains and mountains are all part of which of the earth’s spheres?
Lithosphere/geosphere

13. 15. A long lasting storm that begins over a warm surface of the ocean and has winds of 74 mph or smaller is a _____________
Tropical storm

14. 16. Storms that form within cumulonimbus clouds and produce rain and lightning are called ________.
thunderstorms.

15. 17. One of the best places to seek protection during a tornado is __________
In the attic
Beside a fridge or stove
In the garage
In the basement

16. 18. People often cover their mouths to avoid lung infections during a _______________
Dust or sand storm

17. 19. Which states are part of tornado alley?
Kansas, Texas, Oklahoma, Nebraska

18. 19. ______________ are lines that indicate cities anywhere on the line will have the same air pressure or temperature or humidity.
ISOBARS

19. 20. The most dangerous part of a hurricane is called ___________
Storm Surge

20. 21. Thunderstorms from within
High cirrocumulus clouds
Low cirrus clouds
Large cumulonimbus clouds
High altocumulus clouds

21. 22. A front is a ___________ between air masses.
boundary

22. 23. The clouds that occur at the highest altitude are ______________
cirrus

23. 24. Why does warm air rise?
It is less dense

24. 25. The direction in which the wind moves is influenced by _____________
The pressure gradiant
Earth’s rotation
Neither a or b
Both a and b

25. 26. In a high pressure area are the air molecules close together or far apart?
Molecules are close together and close to the earth’s surface.

26. 26. Where is a maritime tropical air mass formed?
Over warm water

27. Lattitude Elevation Season change landforms
27. What are some of the factors that affect climate?
Lattitude
Elevation
Season change
landforms

28. 28. Place where a warm and cold air mass meet is called a __________________
front

29. 29. Elevations and landforms are factors that determine an areas __________
topography

30. 30. A _____________ means conditions are right for severe weather and a __________ means severe weather has been spotted.
Watch
Warning

31. Wind changes direction as there is an increase in altitude
30. What is wind sheer?
Wind changes direction as there is an increase in altitude

32. 31. What is a rain shadow?
The leeward side of a mountain does not get the wind or rain because the mountain blocks it and sends it aloft.

33. 32. At a __________ fair weather occurs because of a sinking motion of the air so clouds can not form?
Warm Front

34. 33. The temperature at which air is saturated and condensation occurs is called ________
Dew point

35. 34. A series of waves caused by an earthquake is called a __________________
tsunami

36. 35. A type of precipitation that is created when snow passes through warm air, melts and refreezes is called __________________
sleet