Weather & Climate Unit Flashcards

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1
Q

Weather

A

the state of the atmosphere at a place and time as regards heat, dryness, sunshine, wind, rain, etc. (short term conditions)

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2
Q

Climate

A

the weather conditions prevailing in an area in general or over time (long term averages)

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3
Q

Heat

A

the transfer of kinetic energy from one medium or object to another, or from an energy source to a medium or object. Such energy transfer can occur in three ways: radiation, conduction, and convection.

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4
Q

Temperature

A

a measure of how hot or cold something is

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5
Q

Radiant energy

A

energy that is transmitted in the form of electromagnetic radiation

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6
Q

Air mass

A

a huge body of air that has similar temperature, humidity, and air pressure at any given height

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7
Q

Front

A

(meteorology) the atmospheric phenomenon created at the boundary (dividing line) between two different air masses

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8
Q

Jet Stream

A

narrow belt of strong winds that blows near the top of the troposphere

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9
Q

Anemometer

A

a gauge for recording the speed and direction of wind

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10
Q

Hygrometer

A

measures relative humidity

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11
Q

Barometer

A

An instrument used to measure changes in air pressure

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12
Q

Humidity

A

the amount of water vapor in the air

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13
Q

Relative humidity

A

the percentage of water vapor in the air compared to the maximum amount the air could hold

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14
Q

Dew Point

A

the temperature at which condensation begins

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15
Q

Heat Index

A

a number that reflects a combination of high temperatures and high humidity

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16
Q

Wind Chill

A

A measure of cooling combining temperature and wind speed

17
Q

Ozone

A

a form of oxygen that has three oxygen atoms in each molecule instead of two; protects us from dangerous ultraviolet radiation from the sun

18
Q

Weather System

A

the movement of warm and cold air across the globe

19
Q

Low-pressure weather system

A

usually brings warm and stormy weather

20
Q

High-pressure weather system

A

usually brings dry and clear weather.

21
Q

Low-pressure direction

A

low pressure systems result in rainy weather and spin counterclockwise in direction

22
Q

High-pressure direction

A

high-pressure systems result in fair weather and spin clockwise in direction

23
Q

Isotherm

A

line on a map connecting points equal temperature values

24
Q

Isobar

A

a line on a weather map that joins places that have the same air pressure