COME IN SILENTLY BEGIN READING

Tuesday, November 4

AGENDA: HW week 11 due Friday,

WARM UP: answer questions on handout

1. How many layers in the atmosphere are there? What are the layers?

2. When you go swimming, where do you feel the most pressure, at the top of the pool or the bottom. Why do you think this is?

3. Explain why you think your ears “pop” when you are flying in a plane or you go higher up in elevation?

 

LAYER WHIP THROUGH – QUICKLY CHECK YOUR FACTS!

TROPOSPHERE Greatest pressure Weather happens here. The temperature decreases as the altitude increases.

STRATOSPHERE

*OZONE LAYER IS FOUND HERE protecting humans from harmful UV rays.

The temperature increases as you go up

Density and pressure decrease.

MESOSPHERE

*Meteoroids burn up here Air density, air pressure, and air temperature decrease with altitude within the mesosphere

THERMOSPHERE

Temperatures within the thermosphere can reach up to 2,000°C, or 3,600°F.

Closest to the sun Divided into 2 parts – ionosphere

& exosphere Temperature increases with

altitude in the thermosphere. Density and Pressure

decrease

EXOSPHERE

Outermost layer of our atmosphere.

Contain satellites that orbit our planet.

Temperatures remain the same with increasing altitude.

Density and Pressure decrease

QUIZ TIME

1. You may write on your copy.

2. You will 15 minutes to take the test.

TRADE AND GRADE

Put x over the number if it is wrong.

Leave it blank if it is right.

ANSWERS

1. Exosphere 9. 5 2. Troposphere 10. 78% N, 21% O,

and 1% Argon & other gases 3. Mesosphere 11. temperature, air

pressure 4. Thermosphere Bonus Question 2

Newton 5. Stratosphere 6. Troposphere, Stratosphere, Mesosphere,

Thermosphere, Exosphere. 7. C 8. D

11/11=100% 10/11= 91% 9/11= 82% 8/11=73% 7/11=64% 6/11=55% 5/11=45% 4/11=36% 3/11=27% 2/11= 18% 1/11= 9%

WHAT IS AIR PRESSURE??

Air pressure: the weight of the air pressing down on any surface

AIR MOLECULES Oxygen = air molecule Nitrogen = air molecule Argon = air molecule Carbon dioxide = air molecule

DENSITY

Density: the mass per unit volume of an object(How much matter

takes up a certain space)

As density increases, pressure increases

DENSITY & AIR PRESSURE

Altitude: the height of an object above sea level or the ground

As altitude increases, density and air pressure decreases

Less Air Molecules Less Dense

More DenseMore Air Molecules

Tight

Loose

GRAVITY the force of attraction towards the

center of an object, such as the earth or moon

THIS IS HOW AIR PUSHES ON US!!!!!

GRAVITY PULLS AIR IN MAKING AIR PRESSURE. Air pressure is the force the particles in the air exert on the surface.

WHAT IS WATER VAPOR?

As water is heated, it turns into water vapor which is water in the form of a gas molecule.

AS THE PRESENCE OF WATER VAPOR INCREASES, DOES AIR PRESSURE INCREASE OR DECREASE? Take 1 minute to discuss with your partner what you think!

AIR PRESSURE DECREASESWHY!?Because water vapor takes up space =

there is less space for air moleculesWater vaporAir

molecule

WHAT IS THE RELATIONSHIP BETWEEN WATER VAPOR AND AIR MOLECULES / AIR PRESSURE? As water vapor INCREASES, air molecules move further apart.

Air pressure DECREASES as water vapor INCREASES!

SINCE HEATED WATER TURNS INTO WATER VAPOR, DO WARM TEMPERATURES HAVE HIGHER OR LOWER AIR PRESSURE?

TAKE 1 MINUTE TO DISCUSS WITH YOUR PARTNER WHAT YOU THINK!

WARM TEMPERATURES HAVE LOWER PRESSUREWHY!? Because warmer temperatures, heat

up water, increasing the water vapor. Water vapor takes up space = there is less space for air molecules

Water vaporAir

molecule

WHAT IS THE RELATIONSHIP BETWEEN PRESSURE AND TEMPERATURE? Warm air is less dense than cold air so when temperatures are higher, air pressure is lower

WEATHER AND AIR PRESSURE!

High temperatures _______ water vapor ______pressure ______, ___________, __________.

WEATHER AND AIR PRESSURE!

High temperatures more water vapor _________ pressure ______, ___________, __________.

WEATHER AND AIR PRESSURE!

High temperatures more water vapor less pressure __________, ___________, ___________

WEATHER AND AIR PRESSURE!

High temperatures more water vapor less pressure storms, tornadoes, hurricanes.

MORE WATER IN THE AIR!

WHAT IS THE RELATIONSHIP BETWEEN PRESSURE AND WEATHER CONDITIONS?

High Pressure: Clear, calm weather conditions

Low Pressure: Wet, stormy weather conditions

LETS REVIEW WHAT WE’VE LEARNED!

Whatever you do not finish becomes homework

Volume is low, THIS IS INDEPENDENT!!!

Raise your hand if you have any questions!

Stay in your seats