what holds up clouds in the air....and name four kinds of precipitation?

Question

those are the 2 question that is on my hw that i dont know...

Answer 1

Rain, snow, sleet, hail

Clouds are formed by the amount of moisture in the air. If the moisture level is too low....no cloud. Nothing 'holds them up'. Clouds are just forming at the altitude that conditions are right.

Fog is nothing but a cloud that forms at ground level.

Maybe this is what your teacher is looking for:

The most common ways to lift a parcel of air are: buoyancy, topographic lifting, and convergence. Buoyant lifting results from surface heating. This is a common manner of cloud formation in the summer. Buoyancy lifting is also called convection and occurs when local warm areas heat the air near the surface. The warm air is less dense than the surrounding air and rises. This rising air will eventually cool to its dew point and form a fair-weather cumulus cloud.

Air that is forced into, or over, a topographic barrier will also rise and cool to form clouds (figure 31b). This occurs near mountain ranges. For example, warm and moist air from the Gulf of Mexico can be pushed northwestward and up the eastern slope of the Rockies to form extensive cloud decks.

Finally, lifting occurs where there is large scale convergence of air. Cold fronts are a location of strong convergence as cold, dense southward moving air displaces warmer air. Convergence can also occur on smaller scales along the leading edge of the sea or bay breeze boundaries.

Answer 2

Different types of clouds 'hang' at different heights which can be caused by thermal currents, atmospheric pressure and wind.
The sun evaporates the water from oceans, turning it into a vapour which is warmer than the surrounding air causing it to rise. When it rises high enough, the water vapour begins to cool and the vapour droplets start to attraxt each other forming a cloud. Once they're heavy enough precepitation will occur. Some forms of precipitation are rain, snow, sleet, hail.

Answer 3

Cloud droplets which make up clouds are actually moving within the cloud itself.
There uprafts which are carrying them upwards and downdrafts which are carrying them down.
When the downdrafts are stronger than the updrafts ie.gravitational force of droplets>bouyancy force of droplets, the droplets will fall as precipitation.
Depending on whether the cloud is a warm or cold cloud (level in the atmosphere at which the cloud is occuring)
and on surface temperatures the precipitation can be either rain,drizzle,snow,hail,sleet,snow grainsetc...

Answer 4

>What holds up clouds in the air....
Not what, whom... Atlas

>and name four kinds of precipitation?
1. Cold and rainy
2. Warm and rainy
3. Cold and snowy
4. A snowball in hell...




Get off of the computer and do your own homework!! (You didn't take your book home like your teacher reminded you? Right?)

Here you go...
http://www.education.noaa.gov/students.html

Answer 5

I'll just answer your second question.
The four kinds of precipitation are: rain, sleet, snow, hail.

Answer 6

either dust particles or water vapor is just really light

sleet, rain, snow, hail