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Science Study Guide- Chapter 6
Vocabulary:
1. barometer- a tool that measures air pressure.
2. condensation-the process of water vapor, a gas, changing
to a liquid.
3. meteorologist- a scientist who studies and measures
weather conditions.
4. evaporation- changing from liquid water to water vapor.
5. wind vane- a tool that shows the direction from which the
wind is blowing.
6. front- the place where two different air masses meet.
7. anemometer- a tool that measures wind speed.
8. precipitation- any form of water falling from the air to
Earth’s surface.
9. humidity- the amount of water vapor in the air.
Facts:
1. ¾ of Earth’s surface is water.
2. Contrast oceans with fresh water; oceans are salty and
fresh water is not.
3. Air pressure is lower at the top of a mountain.
4. The Baltic Sea is less salty than other seas because
many rivers flow into it.
5. The ocean is more salty in warm, dry places because more
water evaporates leaving behind more salt.
6. Air Pressure is lower as you go higher in the atmosphere.
7. Weather is caused by differences in humidity,
temperature, and pressure.
8. The Sun’s role in the water cycle is water evaporates from
the Sun’s warmth.
9. When moist air rises it cools, and the water vapor
condenses into clouds.
10. Water’s three forms are solid (ice), liquid (water),
and gas (water vapor).
11.Condensation is water vapor becoming liquid water
as it cools.
12. Fronts are shown as curving lines on a weather map.
13. Air is a force that surrounds Earth.
14. When there is an area of lower pressure nearby the water
vapor in the air becomes less dense.
15. You often see clouds along a cold front because the
water vapor in the warm air mass cools and condenses
into clouds.
16. Stratus clouds are close to the ground and often bring
rain or snow.
17. When a cold air mass meets a warm air mass that is not
moving the cold air sinks, the warm air rises, cools and
condenses, strong winds blow, heavy precipitation
happens, it moves fast, and then gets cold. (Do your skit.)
18. When a warm air mass meets a cold air mass, the warm
air cools and condenses, cirrus clouds form, slowly air
spreads out and flat stratus clouds form, there is long
precipitation, then the weather clears and cumulus clouds
form, and now the weather is warmer. (Do your skit.)
Parts of the Water
Cycle
evaporation
condensation
precipitation
Characteristics of
Air Masses
temperature
humidity
pressure
Tools Used to Study
Weather
barometer
anemometer
wind vane
thermometer
rain gauge
hygrometer