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Atmosphere
Layers 1
Layers 2
Density
Density 2
100
Thin layer of air that protects the earth
What is the atmosphere?
100
This is the layer closest to Earth
What is the troposphere
100
This is the highest layer. Atoms and molecules escape into space.
What is the exosphere?
100
anything made of atoms
What is matter
100
What is the density of water?
1 g/cm3
200
the two gases that the atmosphere is mostly made of
What is nitrogen (78%) and oxygen (21%)
200
This layer of air prevents many of the sun's harmful UV rays from reaching Earth
What is the ozone layer
200
Since 99% of the water vapor is here, weather occurs in this layer
What is the troposphere
200
Density is a result of what two things
What is the amount of matter (mass) there is in a certain amount of space (volume)
200
What system do scientists use for measurement?
metric system
300
What are two solids that can be found in our atmosphere?
dust, pollen, ice, salt
300
This layer is the coldest layer
What is the mesosphere
300
This is the hottest layer
What is the thermosphere
300
How do you calculate density?
Density= mass/volume
300
What instrument do scientists use to find mass? What unit do they use?
triple beam balance; grams
400
How does density change as you move UP in the atmosphere?
the air gets LESS dense
400
The ozone layer is in this layer of the atmosphere
What is the stratosphere
400
Meteors burn up in this layer
What is the mesosphere
400
What units are used for density?
g/cm3
400
What tool do scientists use to find volume? What units do they use?
ruler; centimeters (meters)
500
When the amount of this changes in our atmosphere, the weather changes
What is water vapor
500
The ionosphere is in this layer. This is where the northern and southern lights occur
What is the thermosphere
500
Airplanes can reach altitude in this layer
What is the stratosphere
500
A material has a mass of 81g and a volume of 9cm3. What is its density? Will it float or sink in water?
9 g/cm3. Sink
500
Will something with a density of 1 g/cm3 float or sink in water?
It will stay somewhere in the middle