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Energy in the Earth's Atmosphere
Energy in the Earth's Atmosphere 2
Heat Transfer
Heat transfer 2
Winds
100
What are three forms of radiation from the sun?
Infrared, visible light and ultraviolet
100
What is radiation?
Radiation is the direct transfer of energy by electromagnetic waves
100
How is temperature measured?
In units called degrees.
100
Which temperature scale do scientists use?
The Celsius scale
100
What causes winds?
Winds are caused by differences in air pressure
200
Which form of radiation from the sun has the longest wavelength?
Infrared
200
What is scattering?
Reflection of light in all directions
200
What is used to measure air temperature?
A thermometer
200
What is the major way that heat is transferred in the troposphere?
Convection
200
What is the wind-chill factor?
The increased cooling a wind can cause
300
Which form of radiation from the sun has the shortest wavelength?
Ultraviolet
300
What happens to the energy from the sun that is absorbed by Earth's surface?
It heats the land and water. Most is then radiated back into the atmosphere as infrared radiation.
300
Name three ways that heat can be transferred
Radiation, conduction, convection
300
What is convection?
Convection is the transfer of heat by the movement of a fluid
300
How is wind speed measured?
with an anemometer
400
What happens to most of the sunlight that reaches Earth?
It is absorbed by the atmosphere or by Earth's surface
400
How might conditions on Earth be different without the greenhouse effect?
Earth would be much colder
400
What is conduction?
The direct transfer of heat from one substance to another substance that it is touching
400
What are convection currents?
The upward movement of warm air and the downward movement of cool air
400
What are local winds?
Local winds are winds caused by the unequal heating of Earth's surface within a small area.
500
What is the greenhouse effect?
The process by which gases hold heat in the air.
500
What is ultraviolet radiation?
An invisible form of energy with wavelengths that are shorter than violet light.
500
What is thermal energy?
The total energy of motion in the particles of a substance
500
Energy from the sun travels to Earth's surface by:
radiation
500
The way Earth's rotation makes winds curve is called what?
The Coriolis Effect