Chapter 6 Science Terms

Front 1

Weather

Back 1

Condition of Earths atmosphere at a particular time and place.

Front 2

Atmosphere

Back 2

A thin layer of gases that form Earths outermost layer.

Front 3

Water Vapor

Back 3

Water in the form of a gas.

Front 4

Density

Back 4

Measurement of how much mass of a substance is contained in a given volume.

Front 5

Air Pressure

Back 5

Pressure caused by the weight of a collumn of air pushing down on an area.

Front 6

Barometer

Back 6

An instrument used to measure changes in air pressure.

Front 7

Mercury Barometer

Back 7

An instrument used to measure changes in air pressure, consisting of a glass tube patially filled with mercury, with it's open end resting in a dish of mercury.

Front 8

Aneroid Barometer

Back 8

An instrument that measures changes in air pressure without using a liquid.

Front 9

Altitude

Back 9

Elevation above sea level.

Front 10

Troposphere

Back 10

The lowest layer in Earth's atmosphere.

Front 11

Stratosphere

Back 11

The second lowest layer of Earth's atmosphere.

Front 12

Mesosphere

Back 12

The layer of Earth's atmosphere immediatley above the stratosphere.

Front 13

Thermosphere

Back 13

The outermost layer of Earth's atmosphere.

Front 14

Ionosphere

Back 14

The lower part of the Thermosphere.

Front 15

Exosphere

Back 15

The outer layer of the Thermosphere.

Front 16

Electromagnetic Waves

Back 16

A wave that can transfer electric and magnetic energy through the vacuum of space.

Front 17

Radiation

Back 17

The transfer of energy by Electromagnetic waves.

Front 18

Infared Radiation

Back 18

Electromagnectic waves with wavelengths that are longer than visible light but shorter that microwaves.

Front 19

Ultraviolet Radiation

Back 19

Electromagnectic waves with wavelengths that are shorter than visible light, but longer than X-rays.

Front 20

Scattering

Back 20

Reflection of light in all directions.

Front 21

Greenhouse Effects

Back 21

The trapping of heat near a planet's surface by certain gases in the planet's atmosphere.

Front 22

Temperature

Back 22

How hot or cold something is; a measure of the average energy of motion of the particles of a substance; the measure of the average kinetic energy of the particles of a substance.

Front 23

Thermal energy

Back 23

The total kinetic and potential energy of all the particles in an object.

Front 24

Thermometer

Back 24

An instrument used to measure temperature.

Front 25

Heat

Back 25

The transfer of thermal energy from a warmer object to a cooler object.

Front 26

Convection

Back 26

The transfer of thermal energy by the movement of a fluid.

Front 27

Conduction

Back 27

The transfer of thermal energy from one particle of matter to another.

Front 28

Convection Currents

Back 28

Movement of a fluid, caused by difference in temperature, that transfers heat from one part of the fluid to another.

Front 29

Wind

Back 29

Horizontal movement of air from an area of high pressure to an area of lower pressure.

Front 30

Anemometer

Back 30

An instrument used to measure wind speed.

Front 31

Windchill factor

Back 31

A measure of cooling combining temperature and wind speed.

Front 32

Local Winds

Back 32

Winds that blow over short distances.

Front 33

Sea Breeze

Back 33

The flow of cooler air from over an ocean or lake toward land.

Front 34

Land Breeze

Back 34

The flow of air from land to a body of water.

Front 35

Global Winds

Back 35

Winds that blow steadily from specific directions over long distances.

Front 36

Coriolis Effect

Back 36

The effect of Earth's rotation on the direction of winds and currents.

Front 37

Latitude

Back 37

The distance in degrees North or South of the equator.