Please take out
 Blank sheet of paper
 Science Starter slips
Science Starter
 If you could drive you car
straight up (60 mph) into the sky
how long would it take you to
reach space?
Earth’s Changing
Atmosphere
Mind Sprint
 Please take out a sheet of
paper.
 Explain what you already know.
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The atmosphere is…
The atmosphere is made up of…
The atmosphere has…
The atmosphere is affected by…
What we already know
At the End of This Unit
 Some things you will know are…
 What the atmosphere is and why it
is so important for life on Earth.
 What the atmosphere is made of.
 How natural cycles affect the
atmosphere.
 How human pollution has affected
the atmosphere.
When finished with the
Pretest
 Put your scantron and test
sheet on the front table.
 Return to you seat and begin
working on your vocab (small
Earth’s Atmosphere booklet)
Take Out




Science Starter slips
Agenda
Coversheet Packets
Earth’s atmosphere booklets
Important Dates
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Parent Signatures- Thurs 2/18
Booklet Check-in #1- Fri 2/19
Booklet Check-in #2- Tues 3/2
Unit Quiz- Tues 3/2
App. Project Quiz- Fri 2/26
App. Project Teaching- Mon 3/1
Science Starter
 If you are flying in an airplane
and your cabin loses pressure,
why do oxygen masks drop
down?
First 20 Minutes
 Quiet independent work time
 Earth’s atmosphere booklets
 Not optional
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Absorption
Atmosphere
Carbon cycle
Convection
Equilibrium
Greenhouse
effect
 Greenhouse
gas
 Mesosphere
 Ozone
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
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Stratosphere
Troposphere
Water cycle
Air pollution
Altitude
Conduction
Density
Fossil fuel
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Radiation
Smog
Thermosphere
Ultraviolet
radiation
 Water vapor
 Infrared
radiation
 Nitrogen cycle
 Particulate
 Reflection
Note Taking
 Voices Off
 Eyes focused on board
 Writing Down Notes
 Red is Dead
Main Idea:
Earth’s atmosphere is a blanket
of gases that supports &
protects life.
Smaller ideas:
1.1 Earth’s Atmosphere supports life.
1.2 The sun supplies the atmosphere’s
energy.
1.3 Gases in the atmosphere absorb
radiation.
1.4 Human activities affect the
atmosphere.
First 20 Minutes today
 Quiet Independent work time
 Pages 1-4 due Fri 2/19
 Take out cover sheet packets
 I will be checking parent
signatures
Vocab Words
 Absorption- When light hits a
surface and heats that surface.
 Reflection- When light hits a
surface and bounces off.
 Equilibrium- A normal state
1.1 Earth’s Atmosphere
Supports life.
Atmosphere: A whole layer of air
that Surrounds earth.
• Ends at 300 mi. above Earth’s
surface
• Keeps Earth warm.
• Transports Energy.
How thick is Earth’s
Atmosphere?
Earth = Peach
Earth’s Atmosphere = Peach Fuzz
Characteristics of the
Atmosphere:
 Altitude:
Distance above
sea level.
Air becomes
thinner as altitude
increases.
 Density =
Mass/volume
Atmosphere’s
density decreases
as you travel
upward.
Less Gas = Less Dense
< (less) Mass/Volume
More Gas = Dense
> (greater)
Mass/Volume
Materials in the
atmosphere:
Recipe for Air:
• Nitrogen gas: 78%
• Oxygen gas: 21 %
• Argon gas
• Carbon dioxide
• Water vapor
varies
Exact amounts of gases can change depending on
time of day, location, season...
Ongoing Processes: Carbon Cycle (p. 13)
Ongoing Processes: Nitrogen Cycle (p. 13)
Ongoing Processes: Water Cycle (p. 13)
Science Starter:
Before we start class, please:
(1) Pick up your science textbook.
(1) Take our your Earth’s
Atmosphere Daily Work
Packet.
Science Starter:
(1) What are the 3 methods of
energy movement?
(2) Moving from the Earth’s
surface towards space, name
the atmosphere’s layers in
order.
1.2 Energy from the sun
heats the Atmosphere
All the energy around us comes
from the sun.
Sun’s Energy
Absorbed
Sun’s Energy
Reflected
• 50% Absorbed by
Earth’s Surface
•25% Reflected by
Clouds &
Atmosphere
•20% Absorbed by
Clouds & Atmosphere
•5% Reflected by
Earth’s Surface
Clouds Reflect and Absorb
Radiation
Solar Radiation
The Atmosphere Moves
Energy from place to
place
Radiation: Travel of heat energy by
waves through space.
Conduction: Transfer of heat energy
by direct contact.
Convection: Transfer of heat energy
by the movement of gas or liquid.
http://www.think-energy.co.uk/ThinkEnergy/11-14/activities/
Energy Transfer as Heat
Diagram: p. 18
Classify the following as examples of
either: conduction, convection or
radiation.
(1) Blacktop in the parking lot is
warmed by sun.
(2) Air directly above the blacktop
gains heat energy from warm
blacktop.
(3) The bottom of a fry pan becomes
hot as it sits on a hot burner.
(4) The sand on the beach burns the
bottom of your feet.
(5) The bubbles of goo rise to the top
of your lava lamp.
Atmosphere’s temp. layers
Diagram
(p. 20)
Troposphere: “Turning”
• Nearest Earth’s surface
• Heated by the ground
• Temp.  as you  in elevation
• 80% of total mass of
Atmosphere
Stratosphere: “Spreading out”
• Contains ozone molecules
• Absorbs radiation energy from
the sun
• Temp.  as you  elevation
Mesosphere: “Middle”
• Very thin air (< .1% of
Atmosphere’s mass)
• Heated by stratosphere below
• Temp.  as you  elevation
Thermosphere: “heat”
• Begins at 56 mi. above Earth
• Air becomes less & less dense
• Absorbs solar radiation
• Temp.  as you  elevation
Analysis:
(1) Airplanes fly
near the top of
the
troposphere. Is
it more
important to
heat or cool the
passenger
cabins? Explain.
(2) Ideally, earth
should lose about
the same amount of
energy as it
absorbs from the
sun. Does energy
move from Earth’s
surface and
atmosphere out to
space by radiation,
convection or
conduction?
Explain.
Science Starter:
Before we start class, please:
(1) Pick up your science textbook.
(1) Take our your Earth’s
Atmosphere Daily Work
Packet.
Science Starter:
(1) Name 4 ways gases can affect
radiation.
(2) What type of radiation is absorbed
by ozone?
(3) How do green house gases keep
earth warm?
1.3 Gases in the atmosphere
absorb Radiation
Atmosphere can Affect light in 4
ways:
• Absorb light
• Reflect light
• Let light pass through
• Give off light
Electromagnetic Spectrum
The Ozone Layer protect life
from Harmful Radiation
• In stratosphere
• Absorbs
harmful
radiation (Uv)
from sun
Diagram (p. 23)
Science Starter:
For the first ~25 min. of class
you will quiet, individual work
time to work on the following:
• Finish (& hand in) absorption &
radiation lab
• Vocab. organizer
• Atmosphere (ch 1) readings &
daily work packet
By the end of today you should be
able to explain:
1. What is the greenhouse
effect?
2. What are greenhouse gases
(including examples)?
3. What could happen if humans
increase the amount of
greenhouse gases in earth’s
atmosphere?
What is the Greenhouse
Effect?
 Keeps Earth warm.
 Gases in earth’s
atmosphere that
slow movement of
Heat energy away
from earth’s
surface (jacket)
Diagram (p. 25)
What are
Greenhouse
gases?
Analysis:
(1) What would happen to earth’s
temperature if the amount of
greenhouse gases in the
atmosphere changed?