What is in the Air
What are the two main elements that make up air?
Oxygen and Nitrogen
Water in gas form is called __________
water vapor
Why can't we see water vapor in the air?
Molecules are too small
Cooling a substance turns a gas into a liquid
condensation
_______ is a mixture of different types of gases.
air
The amount of water vapor in the air is called___________.
humidity
What are the two things that make up a cloud that allow us to see it?
gases and larger water droplets (crystals)
Cooling a substance from a gas to a solid
deposition
List 4 out of 5 pieces of matter that are bigger than a molecule that are found in air
dust, ash, spores, pollen, pollution
What helps us measure the amount of humidity in the air?
Humidity probes
The water droplets and crystals reflect light from the sun
Any type of solid particle that water vapor sticks to as it cools down is referred to as ____________
cloud seeds
Cloud condensation nuclei (CCN)
Name two additional that are found in air (not O or N)
carbon dioxide
water
argon
The amount of water vapor in the air is called?
Relative humidity
Water has to turn from a __________ to a _______ to form a cloud.
gas-liquid
When there is not enough CCN in the air, what happens?
No clouds will form
How long does one molecule of air last?
No lifespan
How do we measure relative humidity?
percent
How many clouds can be in the sky?
an infinite number
What does CCN stand for?
cloud condensation nuclei