Download Weather Unit Study Guide 1. What are the three functions of the

Weather Unit Study Guide
1. What are the three functions of the Earth's atmosphere?
a. it protects us from meteorites
b. it protects us from harmful uv rays
c. it contains gases need for life
2. Name the layers of the Earth's atmosphere in order from Earth to space.
troposphere, stratosphere, mesosphere, thermosphere, exosphere
3. Which layer do we find important gases for weather conditions? troposphere
4. The ozone layer absorbs ultraviolet radiation (uv rays)
5. Where do we find aurora borealis? ionosphere
6. The layers of the atmosphere are classified according to changes in temperature.
7. What are the two most abundant gases in the atmosphere? nitrogen (78%) and
oxygen (21%)
8. Rain is most likely to occur when temperatures are above freezing.
9. As you move up through the troposphere, the temperature gradually gets colder.
10. Which causes erosion, condensation or surface run-off? surface run-off
11. The temperature in the stratosphere is cold until it reaches the ozone layer.
12. Why do you get out of breath when climbing a mountain? there is less oxygen in
each cubic meter of air.
13. Where is the ozone layer found? stratosphere
14. What happens to air pressure the farther you go in the atmosphere? it gradually
decreases
15. Which instrument is used to measure air pressure? barometer
16. Be able to identify the correct order of the water cycle diagram.
17. When raindrops fall through a layer of air below 0 C, sleet forms.
18. Which clouds are shaped like cotton balls? cumulus
19. Which is the greatest source of moisture entering the atmosphere through
evaporation, glaciers or oceans? oceans
20. Which type of cloud produces thunderstorms and what does it look like?
cumulonimbus, looks like an anvil
21. The water on earth has been here for millions of years.
22. During which process of the water cycle does water vapor cool and form clouds?
condensation
23. Air in the atmosphere has pressure because air has mass.
24. Which part of the hurricane is calm? eye
25. What would happen if water evaporated, but it didn't condense? clouds would not
form
26. People who study weather and try to predict it are called meteorologists.
27. What instrument measures wind speed? anemometer
28. Relative humidity is measured with a psychrometer.
29. Along a warm front, the warmer, less dense air rises over the cold air.
30. What kind of weather occurs at the boundary of two unequal air masses? rain
31. What has led to more accurate weather forecasting? computer technology
32. A hurricane is a low pressure system with high winds that forms over water.
33. Cool air masses tend to be more dense and flow under warm air masses.
34. Review weather maps and symbols, also direction they travel.
35. Precipitation and storms occur in low pressure systems.
36. High, thin feathery clouds containing ice crystals are cirrus.
37. When the barometric pressure is falling, what kind of weather can you predict?
Stormy
38. What happens to solar energy that is absorbed at the Earth's surface? it heats the
land and water.
39. The main way heat is circulated through the atmosphere is by convection.
40. Which of these is not a convection region: tropical, temperate, polar, or trade? trade
41. Differences in heating and the spinning of the Earth on its axis, cause global winds
to develop.
42. Which global winds blow from the northeast toward the west in the northern
hemisphere moving very cold air with them? polar easterlies