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20 Cards in this Set

  • Front
  • Back
What is heat?
when energy is transferred from a hotter object to a cooler one.
What is radiation?
the transfer of energy by electromagnetic waves or direct contact.
What is conduction?
the transfer of heat from one substance to another substance when molecules collide. (direct contect/touching)
What is wind?
the movement of air from an area of high pressure to an area of lower pressure.
How are winds caused?
They are all caused by differences in air pressure.
What is an anemometer?
an instrument that measures wind speed.
What are local winds?
winds the blow over short distances. (They are caused by unequal heating of Earth over short distances.)
What is a sea breeze?
the flow of air from an ocean or lake to the land. It occurs during the day and the cold air on the water pushes hot air up and the hot air is pushed to the water. Air on the ocean is cooler then the air on the land.
What is a land breeze?
-the flow of air from land to a body of water.
-occurs at night
-air on the ocean is cooler then the air on the land.
What are global winds?
winds that blow steadily from specific directions over long distances.
What is the Coriolis effect?
the effect on Earth's rotation on the movement of air masses. (winds in the Northern Hemisphere curve the the right and the winds in the Southern Hemisphere curve to the left at 15 north or south of the equator.)
What is evaporation?
the process by which water molecules in liquid water escape into the air as water vapor.
What is condensation?
the process by which molecules of water vapor become liquid water.
What is the dew point?
the temperature at which condensation begins.
What is humidity?
a measure of the amount of water vapor in the air.
What is relative humidity?
the percentage of water vapor in the air compared to the maximum amount the air can hold.
What is a psychrometer?
an instrument that measures relative humidity.
How does a psychrometer work?
It has two thermometers: one dry-bulb, one wet-bulb. The wet bulb has gauze covering it that it is moistened with water. Air is blown over both thermometers by swinging the instrument. Because the wet-bulb is cooled by evaporation, its reading drops below the dry-bulb.
How do clouds form?
when water vapor in the air becomes liquid water or ice crystal through condensation.
How many types of heat transfer are there?