Oxygen is used by all ___________
a. tree air
b. dirt worms
c. living things
d. carbon dioxide
c. living things
100
What does L and H stand for?
L is for low and H is for High
100
Name all the types of heat transfer.
radiation, conduction, convection
100
What instrument measures wind direction?
Wind vane
100
What is the calm area near the Equator called?
The doldrums
200
What do humans breathe?
a. water
b. oxygen
oxygen
200
True or False: Air Pressure doesn't change from one day to the next.
False, it does change from day to day.
200
When you walk into a kitchen while your parent is cooking food, you feel the hot stovetop with your hand. What types of heat transfer is that?
conduction
200
Which instrument measures wind speed?
Anenometer
200
In a sea breeze, cool air comes from the ______.
The sea because it takes longer for water to warm up than land.
300
What do trees breathe?
a. air
b. carbon dioxide
c. oxygen
b. carbon dioxide
300
High pressure usually means _______ weather and low pressure can lead to _____, ________ weather
High pressure usually means fair weather and low pressure can lead to cloudy, rainy weather
300
What heat transfer keeps water boiling?
convection
300
What is the effect of unequal heating of the atmosphere?
Wind, because the air moves from an area of high pressure to low pressure.
300
Which type of heat transfer heats the majority of the Earth's atmosphere?
Convection currents.
400
Nitrogen prevents ____ burning of the _____ surface.
a. fire, pluto
b. rapid, Earth
c. oxygen, atmosphere
b. Nitrogen prevents rapid burning of the Earth's surface.
400
What do scientists use to measure pressure?
A barometer
400
You walk into a car during the day and it is really hot on the inside. What caused it to get hot?
radiation
400
Which direction does the wind move?
area of high to low pressure
400
Describe convection?
the method of heating fluids (gases and liquids). As the fluids warm up the molecules move more rapidly and spread out, causing them to be less dense. The less dense air moves to the top forcing the denser air to the bottom. The cycle continues
500
Which gas is the most abundant in our atmosphere?
Nitrogen
500
When a substance is heated, what happens to the molecules?
Molecules begin to move rapidly and spread further apart
500
How do all three methods work to heat the atmosphere?
1- radiation from the sun heats the earth.
2- ground conducts heat for the first few meters
3- convection currents move warm air up and force cold air down
500
How are global winds made?
They are made by winds hat blow steadily from specific directions over long distances.
500
Describe a land breeze.
Cool air comes off the land and pushes the warm air over the sea up