science Flashcards
the suns energy travels to earth as electromagnetic radiation , a form of energy that can move through the vacuum
electromagnetic waves
most of the electromagnetic waves from the sun and reach earth
are in a form of visible light that you can see
earths atmosphere is divided into layers based on
temperature
about 50 percent Is absorbed by land and water and
converted or transformed to heat
in the stratosphere ozone absorbs more infrared and uv energy without the ozone layer what would happen
too much uv radiation would hit earth and threaten the health of organisms
only a tiny fraction of the visible light that reaches earths surface is transformed to
chemical energy in plants and other photosynthetic organism
gasses in the atmosphere trap some of the heat near earths while some heat escapes into space this is
the greenhouse effect
increasing the amounts of carbon dioxide and methane in the atmosphere this has causes an increase in the average temp of earth which in turn is
causing changes to sea level and melting ice in polar regions and glaciers
is the total energy of motion in the particles of a substance
thermal energy
heat transfers in three ways
convection conduction radiation
is the transfer of heat by a liquid
convection
the transfer of energy by electromagnetic waves
radiation
the transfer of heat between two substances that are in a direct contact
conduction
is the movement of air parallel to earths surface
wind
wind speed and pressure can be measured with an
anemometer