Topic 7 lesson 1 Flashcards
The sun’s energy to get to Earth as
Electro magnetic Waves
what are the 3 main types of wanes from the sun
Ultra Violet, Infred, Visible light
electromagentic waves are able to _______ through the _______ of space
travel; Vacuum
Before the sun’s energy can make life possible on Earth it has to make its way through our __________
atmosphere
what are the 4 layers of Earth atmosphere
stratosphere, mesosphere, thermosphere, troposhere
Only _____ of the sun’s energy is absorbed by land and water
50%
__ % is reflected by clouds
25
__% is absorbed by gases
20
_% is reflected by the surface
5
Of the amount of energy absorbed by land and water, very little is used for _________
Photosynthesis
Most energy is remitted as ________ _______ to warm the planet
infrared radiation
what do glass walls do
they allow sunlight inside
Some sunlight is ________ by plants and turned into chemical energy
absorbed
How does the Earth’s atmosphere function like a greenhouse
Sunlight is absorbed and trapped by the atmosphere
What happens the “ greenhouse” holds to much heat
the temperatures will rise
Recent human activity has yielded an increase in _____ ______ and _________
carbon dioxide, and methane
These gases are very good __________ heat
trapping
what would be the results if these chemical are not controlled
Global Temperatures
Matter is made of ______ which are always in motion
atoms
The more energy an atom has, the _____ it moves and the higher its _____ energy
faster and thermal
what is thermal energy
the total amount of motion in the particles of a substance
what is a melting point
solid to a liquid
what is a boiling point
liquid to a gas
Heat only flows from ______ object to a ______ object
hotter; cooler
