Name- ______

Air Pressure in the Earth’s Atmosphere

1.  Fill in the diagram of the atmosphere. In each layer list the following: density of air molecules, air pressure, temperature, and what type of objects would I find.

Layer Density Air Pressure Temperature Objects

Troposphere / Most dense / Most air pressure / 0- -60 C / Planes, clouds, hiker
Stratosphere / Less dense / Less air press / Warm ozone / Ozone,wea.balloon
Mesosphere / Less dense / Less air press / -90 C cold / meteoroids
Thermosphere / Least dense / Least air press / 1800C hot / Northern lights

2.  Explain what the ozone layer is and which layer of the atmosphere would I find it. The ozone layer is made up of 3 oxygen atoms and protects us from UV rays from the sun. It is found in the stratosphere layer of the atmosphere.

3.  Define the following:

A.  Strato-_layered/flatten______

B.  Tropo- changing______

C.  Therm- heat______

4.  Define the following terms:

A.  mesosphere- It is the 3rd layer, middle layer, of the lower atmosphere and is the coldest layer reaching

-90 C.

B.  Ionosphere- It is the 1st sub-layer in the highest layer of the atmosphere, thermosphere, where the Aurora Borealis, northern lights, is seen.

C.  Nitrogen- It is the most common gas in the atmosphere, .78.

D.  Oxygen- It makes up .21 of the earth’s atmosphere.

E.  Ozone- a gas made up of 3 oxygen molecules bonded together that occurs naturally in the upper stratosphere and protects us from UV rays.

F.  Radiation- Is the 1st form of energy that we receive from the sun.

G.  Smog- A type of pollution.

H.  Water Vapor- It makes up from zero to .04 of the atmosphere.

5.  Explain the importance of protecting our earth from smog, high carbon dioxide levels, and acid rain. Describe how we can change from a fossil fuel economy to a hydrogen economy. The importance of protecting our earth from smog, high carbon dioxide, and acid rain is to keep our earth vital by decreasing the amount of carbon dioxide and sulfur by not depending on fossil fuels. We can change the amount of greenhouse gases by changing to a hydrogen economy by using hydrogen from water as a means of fuel for our transportation and electricity.

6.  Draw and label a pie graph that depicts the composition of the atmosphere.

.78- Nitrogen less than .01 carbon dioxide

.21- oxygen less than .01 Water Vapor/ other gases

7. Draw and label a mercury barometer. Answer in notes

8. The formula for density is love, Mass

Volume