chapter 3 section 4

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Ultra Violet Radiation

which is an invisible form of energy with wavelengths that are shorter than wavelengths for violet light. Harmful to humans

about 25% of incoming sunlight is ________ by clouds, dust, and gases of the atmosphere.

reflected

about 5% is _________ by the surface back into the atmosphere

reflected

gas molecules scatter ___________________wavelengths more than_______ wavelengths.

short wavelengths of visible light , long wavelengths

violet and blue have the ______ wavelengths

shortest

what three things happens to the radiation as it passes through Earth's atmosphere?

some of it passes through and heats the Earth. Some goes back into space. Some is absorbed to the atmosphere.

nearly all the energy in Earth's atmosphere comes from the ?

sun

UV rays can cause?

sunburns

radiation

the transfer of energy by electromagnetic waves

most of the energy from the sun travels to Earth in the form of _____ and ____. A small amount arrives as?

visible light, infrared radiation, UV radiation

infrared radiation is not ________ to humans but it can be felt as ____.

visible,heat

explain greenhouse effect in order

1. the sun's energy reaches earth 2.earth's surface is heated 3.some heat is radiated back into space 4.some radiated heat is absorbed by gases in the atmosphere

different wavelengths of radiation are absorbed by?

different layers in the atmosphere

all the colors in the rainbow?The different colors are the result of different?

red, orange, green, blue, indigo, violet. Wavelength

infrared radiation

a form of electromagnetic waves, has wavelengths that are longer than the wavelengths for red light

electromagnetic waves

a form of energy that can move throughspace

About 20% is ____ by gases and particles in the atmosphere.

absorbed

About 50% is _________ by Earth's surface. This heats land and the water.

absorbed

Some sunlight is _________ or _________ by the atmosphere before it can reach the surface. The rest?

absorbed, reflected. Passes through the atmosphere

Visible light

all the colors in the rainbow

sunlight must pass through what before it can reach Earth's surface?

atmosphere

over time, the amount of energy absorbed by the atmosphere and Earth's surface is in ____ with the amount of energy __ into space.

balance, radiated

why is the sky blue?

because of scattering/ scattered light

scattered light looks?

bluer than ordinary sunlight

Infrared radiation penetrates farther into the atmosphere before some of it is absorbed by___________ and ?

carbon dixiode and water vapor

scattering

dust sized particles and gases in the atmosphere disperse light in all directions

energy from the sun reaches Earth as?

electromagnetic waves (radiation)

Earth's surface radiates some energy back into the atmosphere as ?

infrared radiation

what happens to most of the sunlight that reaches Earth?

it is absorbed

how might conditions be without greenhouse effect

it would be really cold

About 50% of the energy that reaches Earth's surface is absorbed by________ and changed into _____.

land or water, heat

red and orange have the _______ wavelengths

longests

clouds act as _____, reflecting ________ back into space.

mirrors, sunlight

the greenhouse effect is a ______ process. It keeps Earth's atmosphere at a ?

natural, temp that is livable for humans

UV rays are absorbed in the _ layer?

ozone

some absorbed energy is ____ back into the atmosphere

radiated

how does most of the energy from the sun travel to Earth's surface

radiation

electromagnetic waves are classified according to ?

wavelength


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