1.
At a constant pressure, hot air than cold air
A
is more dense
B
is less dense
C
has more vapor
D
has less vapor
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At a constant pressure, hot air than cold air
is more dense
is less dense
has more vapor
has less vapor
Why are there winds?
Because air flows down-hill
Because of temperature differences.
Because air flows from high density to low density
Because air flows along isobars.
If Earth had no greenhouse gases, the planet would be ?
Too hot to support life
Cooler but still able to support life
Too cold to support complex life.
It depends on the species of aerosol in the GHG-free atmosphere.
What place experiences the greatest seasonal variability in temperature?
The North Atlantic Ocean
Central Canada
Costa Rica, Central America
Mumbai, India
The layer of the atmosphere closest to Earth is called the: _____________.
troposphere
stratosphere
exosphere
mesosphere
Certain gases in the atmosphere: water vapor, carbon dioxide, methane and nitrous oxide, help maintain the Earths temperatures and climate. These are called: __________ .
ozone gases
solar gases
greenhouse gases
stomach gases
Something that might happen because of global warming is: __________.
melting polar ice caps
more reflected sunlight off the ice pack
lower sea levels
a sale on bathing suits
Things you can do to help decrease global warming include:
Keep your air conditioner on high.
Turn off your lights when you're not using them.
Keep your freezer door open.
Eat more ice cream.
This layer keeps us not too hot in the summer and not too cold in the winter. Scientists call this the ________.
greenhouse effect
seasonal effect
ocean effect
lake effect
The solar energy that warms the Earth includes visible light, infrared and _____ coming from the sun.
gamma rays
ultraviolet radiation
microwaves
sunspots
The solar radiation that bounces off the Earth back toward the atmosphere is mostly _____ (with a longer wavelength).
gamma radiation
x-ray radiation
nuclear radiation
infrared radiation
How are humans making greenhouse gases of our own?
burning fossil fuels in our cars
burning forests
with large-scale agriculture
all of these
Too many greenhouse gasses in the atmosphere may block heat from escaping into space and trap too much heat next to the Earth's surface causing: ________________.
another ice age
global warming
earthquakes
volcanic eruptions
Earths temperatures are stable because we are surrounded by ________ which allows the right amount of sunlight in to warm the Earth.
a cloud layer
an atmosphere
gravity
water