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science weather air

test study guide

QuestionAnswer
What is the percentage of Oxygen in the air 19%
The water cycle the continuos movement of water from water sources such as lakes rivers and oceans, into the air, onto and over land, into the ground, ind back t water sources
The water cycle
1. evaporation when liquid water turns into gases water called water vapor
1a. transpiration plants release water vapor into the air
2. condensation when water vapor turns into liquid water
3. precipitation water falls back to earth
4. run-off water collects and returns to water sources
What is weather weather is the condition of the atmosphere at a particular time and place
what is the solid form of water snow
what is the liquid for of water rain
what is the gas form of water water vapor
humidity the amount of water vapor in the air
when temp. increases what else increases water vapor because there is more thermal en. to do the work of evaporation
relative hum. is how much water vapor is in the air compared to how much could be in the air at a particular temp.
Dew point this is the point at which air is saturated ( full of water ) and condensation begins. it is measured in degrees. it accurately reflects how it feels outside
what happens when relative humidity reaches 100% the air is saturated, and reaches its dew point
dew point can never be higher than the __________ temperature
if dew point increases that means the _________ has increased moisture
CLOUDS
cumulus clouds - puffy - white clouds
cumulonimbus clouds - storm clouds
cirrus clouds high clouds - - - - - - -
stratus clouds layered clouds
PRECIPITATION
what do rain drops look like hamburger buns
how does snow form forms when water vapor changes directly to a solid ( ice crystals ), sometimes ice crystals join together to make snow flakes .
how many points does a snowflake have 6
how does sleet form sleet forms when rain falls through a layer if freezing air it freezes and produces ice
in which cloud is hail made in cumulonimbus cloud
hail occurs in ___________ and _______ spring and summer
how does hail form hail starts out as rain and when it falls through the warm section of the cloud it evaporates and goes in the cold section f the cloud after doing this patterns a lot of times it creates layers of ice and forms hail
Cloud in a bottle experiment
1st step of cloud in a bottle experiment water vapor and dust particles are in the air
2nd step of cloud in a bottle experiment when you squeeze the bottle, you increase the pressure in the bottle
3rd step of cloud in a bottle experiment the increased pressure causes the temp. to rise
4th step of cloud in a bottle experiment the rising air temp. causes more of the water in the bottom if the bottle to evaporate ( turn into water vapor ), increasing humidity in the bottle.
5th step of cloud in a bottle experiment when you release the bottle, the pressure in the bottle drops
6th step of cloud in a bottle experiment when the pressure drops, the temp. also drops
7th step of cloud in a bottle experiment when the air cools, it is saturated (cold air cannot hold as much moisture as warmer air) . in other words, the air has reached dew point
8th step of cloud in a bottle experiment condensation occurs
9th step of cloud in a bottle experiment Billions of tiny droplets of water join together and make a cloud
Condensation nuclei dust, salt, ash etc. particles in the air onto which water vapor condenses to form a cloud
conduction is the transfer of thermal en. from one material to another by direct contact
convection is the transfer of thermal en. by the circulation or movement of a liquid or gas ( fluids ).
radiation is the transfer of en. as electromagnetic waves.
what tool is used to measure relative humidity psychrometer
what tool is used to measure rain rain gauge
how is a rain drop formed a rain drop starts as small as a period then other droplets join and make a rail drop.
Created by: superstack
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