Vocabulary #1
evaporation
the process by which liquid water changes into water vapor
Do other planets have air?
yes, small and thin layers
What is weather?
the conditions in an area
Temperature can be measured with either ____ or _____ thermometers
liquid or thermometers
barometer
measures air pressure
condensation
the change of state from gas to liquid
About what % of nitrogen is in our air?
78%
what is air pressure?
the force of air pushing on things around it
Falling air pressure means?
rain
hygrometer
measures humidity
precipitation
rain, snow, sleet, or hail that falls from clouds
Nitrogen and Oxygen are ______ the will always be main gases
permanant gases
fair and dry
What is wind?
moving air
anemometers
measures wind speeds
About what % of oxygen is in our air?
21%
Water vapor...
changes the mass in our atmosphere
Carbon Dioxide is
what plants take in
Life cannot exist without?
Oxygen