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Energy in the Atmosphere - 6th Grade

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William Begoyan

on 24 January 2018

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Transcript of Energy in the Atmosphere - 6th Grade

Energy in the Atmosphere
By: Mr. Begoyan
Page 31 in your ISN
Page 272-288 in your textbook

Avid EQ: What is solar energy, and why is it not cooking us alive?
Energy from the sun
Nearly all the heat and energy in the atmosphere comes from the Sun.
Solar energy is transferred as
is the transfer of energy by EM waves.
EM wave energy from the Sun is called
solar radiation
Visible spectrum
is solar radiation that we can see.
Non-Visible spectrum
is solar radiation that we can't see.
Infrared (IR)
Ultra Violet (UV)
, and
waves are some types of non-visible radiation.
Sun's Energy
About 50% of all the light from the Sun is reflected back out into space.
About 20% is reflected and/or absorbed by the atmosphere.
Clouds act like giant mirrors, reflecting as much as 25% of sunlight.
About 5% is reflected back by the surface of our planet.
50% of sunlight reaches the Earth's surface and heats it up.
The Earth radiates this heat back when it cools at night.
Greenhouse gases
in the atmosphere keep most of this heat from leaking into space.

Greenhouse gases
Greenhouse gases
absorb heat radiated by the Earth, much like a blanket absorbs heat generated by our body.
The three primary gases, in order of significance are:
Water Vapor
Carbon Dioxide
Heat transfer in the atmosphere
is the transfer of energy from a hotter to a cooler object.
Heat is measured with a
There are 3 types of heat transfer.
: Direct transfer of heat in solids.
: Transfer of heat by moving particles in fluids. A circular
convection current
is formed.
: transfer of heat by electromagnetic waves.
All 3 types of heat transfer keep the troposphere warm.
is the horizontal movement of air from an area of high pressure to an area of low pressure.
This is due to the uneven heating of the Earth.
Low temperatures
generally generate
high pressure
zones (colder air is denser),
high temperatures
low pressure
zones (hot air is less dense).
measure wind speed. They have cups mounted on an axle, which turn based on the strength of the wind.
Where does most of the heat in the atmosphere come from?
In what form is this energy transferred to the Earth?
What is radiation?
What are the two different types of spectrum?
How much solar radiation reaches the Earth's surface?
What keeps the Earth from cooling off completely at night?
What are the 3 most significant greenhouse gases?
What is heat, and how is it measured?
How are some ways that heat can be transferred?
What is wind? Which way does it move?
How is air temperature and air pressure related?
What is wind strength measured with?
On page 30, using words and visuals, describe what happens to the energy in the atmosphere, and how it is transferred.
Full transcript