What are the 2 main gases that make up air?
Nitrogen and oxygen
Rain, snow, sleet, or hail that falls from the clouds
What is precipitation?
The mixture of gases surrounding the Earth
What is air?
Warm air does this
What is rises
There is no air to breathe in this layer of the atmosphere
What is the exosphere?
The force of air pushing down on an area
What is air pressure (or atmospheric pressure)?
particles that have more energy and move quickly
What is hot air?
A weather instrument that measures air pressure
What is barometer?
particles that have less energy and move more slowly
What is colder air?
a weather instrument that measures humidity
What is hygrometer
What happens to air particles when they are forced into a smaller space?
What is compressed?