Science 6

Question 1

Dew point

Answer 1

Temperature to which air is cooled at a constant pressure to reach saturation, at which point condensation can occur.

Question 2

Humidity

Answer 2

Amount of water vapor in the air.

Question 3

Relative Humidity

Answer 3

Ratio of water vapor contained in a specific volume of air compared with how much water vapor that amount of air actually can hold.

Question 4

Coalescence

Answer 4

Process that occurs when cloud droplets collide and form the same process, which can conserve.

Question 5

Condensation

Answer 5

Process by which a cooling gas changes into liquid and releases thermal energy; change of matter from a gas to a liquid.

Question 6

Air mass

Answer 6

Large body of air that takes in the characteristics of the area over which it forms; can be described by its stability, temperature, and humidity.

Question 7

Front

Answer 7

Boundary between two air masses of differing densities; can be cold, warm, stationary , or occluded and can stretch over large areas of Earths surface.

Question 8

Analog forecast

Answer 8

Weather forecast that compares current weather patterns to patterns that occurred in the past.

Question 9

Digital Forecast

Answer 9

Weather Forecast that uses numerical data to determine how atmospheric variables change over time.

Question 10

Isopleth

Answer 10

Line drawn on a weather map that connects points of equal or constant values.

Question 11

Supercell

Answer 11

Extremely powerful, self-sustaining thunderstorm characterized by intense, rotating updrafts.

Question 12

Tornado

Answer 12

Violent, whirling column of air in contact with the ground that forms when wind direction and speed suddenly change with height, is often associated with a supercell, and can be extremely damaging.

Question 13

Storm surge

Answer 13

Occurs when powerful, hurricane-force winds drive a mound of ocean water toward shore, where it washes over the land, often causing enormous damage.

Question 14

Eye

Answer 14

Calm center of a tropical cyclone that develops when the winds around it reaches the center at least 120 km/h.

Question 15

Eye wall

Answer 15

Band where the strongest winds in a hurricane are usually concreted surrounding the eye.

Question 16

Cold wave

Answer 16

Extended period of lower that normal temps caused by large high pressure systems of continental polar or arctic origin.

Question 17

Heat wave

Answer 17

Extended period of higher than normal temps caused by large high pressure systems that warm by compression and block cooler air masses.

Question 18

Drought has

Answer 18

Extended period of low rainfall usually caused by shifts in global wind patterns, allowing high pressure systems to remain for weeks or months over continental areas.

Question 19

Wind chill factor

Answer 19

Phenomenon measured by the wind chill index, which estimates the heat loss from human skin caused by a combination of wind and cold air.

Question 20

Ozone

Answer 20

A gas, formed by the addition of a third oxygen atom to an oxygen molecule, that exists in a layer in the atmosphere and absorbs ultraviolet radiation from the sun the major chemical in smog.