Characteristic: #3: Temperature
The Greenhouse Effect
Below are the answers to lab book page 34.
On earth, the gases in our atmosphere
act like a greenhouse keeping the earth warm. The energy
from the sun enters Earth’s
atmosphere and heats the surface of our planet. As the heat
rises, some of it escapes into space. Greenhouse gases, such
as carbon dioxide, methane and water
vapor, trap some of this heat and keep it close to
is called the greenhouse effect because it is very similar to what happens in a real
The more greenhouse gases in the atmosphere the
more heat that gets trapped, the warmer earth
Greenhouse gases act
a blanket trapping
the heat close to earth. Carbon Dioxide, one of
the most common
greenhouse gases, comes from the burning of fossil fuels.
major fossil fuels are coal, oil, and natural gas. Therefore,
every time coal is burned to produce electricity or oil is burned to run our
cars, carbon dioxide is released into the atmosphere.
There are several things we can do to reduce the amount of carbon dioxide reaching
our atmosphere. Three
things we can do are use alternative ways to produce electricity that do not
require the burning of fossil fuels like, wind energy, solar energy, geothermal,
our waste by recycling, walking, turning off lights.
Many scientists are worried that an increase in
greenhouse gases in our atmosphere will prevent heat from escaping,
will became too warm.
They believe that this will increase the normal temperature on
Earth and result
in what is called global warming.