Wind is caused by...
a) changes in air pressure
b) people doing "the wave" at the Indians game
c) trees moving
a) changes in air pressure
100
True or False: The water cycle always begins in the same spot. Explain.
False. There is no true beginning or ending. It is a cycle.
100
What is the name of the wind type that we mostly have in North America?
The wind type is called a prevailing westerly.
200
True or False
Cold air is less dense than warm air, therefore it rises.
False. Cold is more dense than warm air, which causes the warm air to rise.
200
Name the four main types of precipitation.
Rain, snow, sleet, and hail.
200
What percentage of the water on Earth is usable?
About 1% is usable. Although about 3% is freshwater, we can only access about 1% of it. The other 2% is stuck in glaciers, ice, or in some stage of the water cycle.
300
List the three main causes of changes in air pressure.
The three main causes of changes in air pressure are the temperature; the water vapor in the air; and the height above sea level.
300
Describe in detail what occurs during the evaporation stage.
During evaporation, the sun heats up water on Earth and turns it into water vapor.
300
What is another name for the water cycle?
It is also referred to as the hydrologic cycle.
400
Air is made up of _____________ and it has mass.
Air is made up of molecules and it has mass.
400
Describe in detail what happens during the condensation stage of the water cycle.
Water vapor grabs onto a piece of dust or dirt in the air and then forms water droplets. The droplets then turn into clouds.
400
If I buy a bottle of water, is it brand new water that has never been used before? Explain.
No, it is not new water. The water on Earth is the same water that has been used forever.
500
Describe the convection cell.
A convection cell is the pattern of warm air rising and cool air sinking.
500
What is accumulation? What is another name for it?
Accumulation is when the precipitation falls to Earth and gathers in puddles, rivers, lakes, oceans, etc. It is also referred to as "collection".
500
Explain in detail what would happen if the water cycle stopped.
Basically, everything and everyone on Earth would die. The plants, animals, and humans need water to live. If the water cycle stopped, we'd never get our Earth replenished.