Chapter 12-Meteorology

Question 1

Air Mass

Answer 1

Large body of air that takes on characteristics of the area over which it forms

Question 2

Front

Answer 2

Boundary between 2 air masses of different densities

Question 3

Trade winds

Answer 3

GWS that flows at 30infinity north and south latitude; Air returns westerly to the equator

Question 4

Prevailing westerlies

Answer 4

GWS that lies between 30infinity and 60infinity north and south latitude; surface air moves easterly toward poles

Question 5

Polar easterlies

Answer 5

GWS that lies between 60infinity latitude and the poles and is characterized by cold air

Question 6

Jet streams

Answer 6

High-altitude, westerly wind band; can flow as fast as 185 km/h

Question 7

Station model

Answer 7

Record of weather data for a specific place at a specific time

Question 8

Isopleths

Answer 8

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

Question 9

Anenometer

Answer 9

Used to measure wind speed

Question 10

Hygrometer

Answer 10

Used to measure humidity

Question 11

Ceilometer

Answer 11

Used to measure the amount of clouds and estimates amount of sky covered by clouds

Question 12

Upper level data

Answer 12

Type of data forecasters use to make predictions

Question 13

Radiosonde

Answer 13

Instrument used to gather data. Sensors measure humidity, pressure, and temperature.

Question 14

Doppler effect

Answer 14

Change in wave frequency depending on position

Question 15

Infrared imagery

Answer 15

Detects differences in thermal energy (heat) Helps meteorologists determine the temp of clouds, which indicates the height and cloud type

Question 16

Digital forecast

Answer 16

Forecast that relies on numerical data

Question 17

Analog forecast

Answer 17

Forecast that compares current forecast to past ones (monthly, seasonal)