Download Earth`s Atmosphere Warm Up

Earth’s Atmosphere
Warm Up
1. Is air a gas, liquid or solid? How do
you know?
2. What does air do when it gets
warmer? Colder?
3. Why does hot air rise and cold air
sink?
Think About it….
You have lived in air all your life.
Write 5 facts about air that you
already know.
1.
2.
3.
4.
5.
DEMO: Balloon of Air
Observations: Find the center of a ruler.
Then tie two similar size/shape/color
balloons, one filled with air and one
empty. What happens?
Data: Compare the mass of two balloons,
once full of air and one not. Which
has more mass? Why?
Inference: Air is matter. It has mass and
volume.
Cardboard Bottom
Observations: Empty clear cup filled with water,
covered with cardboard and inverted
Data: water remained in the cup
Inference: Air exerts pressure in all directions,
even up
Spool in Cup
Observations: Beaker with water and a cork on
surface, cup inverted and lowered into
water
Data: level of water in cup lower than beaker
Inference: air takes up space and cannot
occupy the same space as other matter
2 Liter Bottom
Observations: Warm water poured into a twoliter bottle and bottle closed and set in ice
Data: bottle began to collapse
Inference: Air pressure was lower inside the
bottle than outside
Air Notes
1. Air is composed of gases that are
invisible.
2.Air exerts pressure (pushes) in all
directions.
3.Air has mass.
4.Air takes up space. (Other matter
cannot share the same space)
5.Warm air expands, cool air contracts.
Candle Demo Warm Up
1. What happened in the candle
demonstration?
2. What did this demonstration tell you
about air?
3. What made the water move up into the
flask?
Warm Up
1. Define atmosphere.
2. What does the word altitude mean?
Gases in Our Atmosphere
Nitrogen - 78% - inert (not active) gas,
dilutes the amount of oxygen
Oxygen - 21% - produced by plants, used
in breathing, very active in rusting and
burning reactions
Argon - 0.93% - inert gas, made from
volcanic eruptions
Gases in Our Atmosphere, cont…
Carbon Dioxide - 0.03% - used in
photosynthesis, created in breathing,
greenhouse gas
Water Vapor - varies between 0 - 5 % clouds, precipitation, greenhouse gas
Methane - trace amounts - greenhouse
gas, produced in decay
One more…
• Ozone - trace amounts, absorbs
ultraviolet light, mostly found in the
ozone layer
The Greenhouse Effect
Group 1
Turn to page 456 and
read about the
greenhouse effect.
1. Explain what the
greenhouse effect is.
2. Explain whether it is a
good or bad thing.
Group 2
Read “Greenhouse
Gases”
1. How is the Earth a
greenhouse?
2. What type of gasses are
“greenhouse” gasses?
3. List five types of climate
changes caused by the
greenhouse effect?”
Warm Up
Name the layer of the atmosphere…
1. That we live in.
2. Which contains the ozone layer.
3. Which is the least dense.
4. Which has the highest pressure.
5. Which is the coldest.
Warm Up
1. What is the most abundant gas in the
atmosphere?
2. As altitude increases, what happens to
air pressure? Why?
3. Name two greenhouse gases.
Practice Quiz
1.
2.
3.
4.
5.
6.
As altitude increases, ____________ decreases.
The Earth’s atmosphere is held around the Earth
by ____________.
Which gas protects us from harmful ultraviolet
radiation?
In which layer does weather occur?
Which layer has the coldest temperatures?
Which layer is the least dense?
Practice Quiz, cont…
7.
If there is a fire on a lab station, you should use the
________ _________.
8. If you have a chemical splash in your eyes, you
should rinse for ____ minutes.
9. Name the greenhouse gas that forms clouds.
10. Name the most plentiful gas in the atmosphere.