LESSON 2

Question 1

Condition of the atmosphere at a particular place over a short period of time (Ex: sunny, rainy, windy)

Answer 1

Weather

Question 2

Refers to the weather pattern of a place over a long period, long enough to yield meaningful averages (Ex: hot and humid)

Answer 2

Climate

Question 3

FACTORS AFFECTING WEATHER AND CLIMATE

Answer 3

Solar radiation
Evaporation
Cloud cover or State of the sky
Temperature
Humidity
Rainfall (precipitation)
Atmospheric pressure
Wind

Question 4

Energy emitted by the sun

Determines weather and climate

Measured using a radiometer

Answer 4

SOLAR RADIATION

Question 5

Amount of water that is returned to air from liquid to gaseous state. It is measured using an evaporation pan

Answer 5

EVAPORATION

Question 6

Examples of Greenhouse Gases

Answer 6

Water vapors
Carbon Dioxide
Methane
Chlorofluorocarbons (CFC)
Nitrous Oxide

Question 7

most abundant greenhouse gas in the atmosphere

Answer 7

Water Vapor

Question 8

burning of fossil fuels

Answer 8

Carbon Dioxide

Question 9

produces from decaying plant or animal matter

Answer 9

Methane

Question 10

used as refrigerant in refrigerator and air-conditioning units

Answer 10

Chlorofluorocarbons

Question 11

also called as laughing gas, ________ has been used in surgical and dental procedures for years because of its anesthetic and analgesic properties

Answer 11

Nitrous Oxide

Question 12

Refers to the fraction of the sky obscured
by clouds when observed from a
particular location

Answer 12

CLOUD COVER / STATE OF THE SKY

Question 13

OKTAS is the usual unit of measurement of the cloud cover (0-8 OKTAS)

Answer 13

CLOUD COVER / STATE OF THE SKY

Question 14

0 oktas means ________ : 8 oktas means the sky is ________

Answer 14

clear : completely covered

Question 15

Response to solar radiation
Terms: MAX, MIN, MEAN, NORMAL
Measured using a thermometer
Common units are degree Celsius,
Farenheit, Kelvin, Rankine

Answer 15

TEMPERATURE

Question 16

Water vapor content of the atmosphere. It also Indicates likelihood of precipitation, dew or fog

Answer 16

HUMIDITY

Question 17

expressed as percent, measures current absolute humidity relative to maximum (highest point) for that temperature

Answer 17

Relative humidity

Question 18

ratio of water vapor content of mixture to total air content on mass basis

Answer 18

Specific humidity

Question 19

water content of air expressed in gram per cubic meter

Answer 19

Absolute humidity

Question 20

Amount of humidity in % is measured by

Answer 20

Hygrometer

Question 21

Amount of water that is released from the atmosphere It is measured in mm by using a rain gauge

Answer 21

RAINFALL or PRECIPITATION

Question 22

Force exerted on a surface by air above it as gravity pulls it to Earth. It is measured using a Barometer

Answer 22

Atmospheric Pressure

Question 23

Common values of atmospheric pressure are

Answer 23

1 atm
1013 millibars
101,325 Pa
760 mm Hg
760 Torr
14.7 psi

Question 24

Air in motion

Has magnitude and direction

Measured using anemometer and wind vane or aero vane

Answer 24

Wind

Question 25

WEATHER INSTRUMENTS

Answer 25

CAMPBELL STOKE SUNSHINE RECORDER

RADIOMETER

STEVENSON SCREEN

MINIMUM AND MAXIMUM THERMOMETER

SLING PSYCHROMETER

HYGROMETER

BAROMETER

BAROGRAPH

AERO VANE

ANEMOMETER

RAINGAUGE

TIPPING BUCKET RECORDER AND RAIN GAUGE

EVAPORATION PAN

Question 26

continuous record of bright sun shine hour is obtained by sunshine recorder; consists of a spherical glass mounted on a stand. When the sun rays fall on the glass, a strip of prepared paper held in a grove at the focus length starts burning

Answer 26

Campbell Stoke Sunshine Recorder

Question 27

device used for measuring radiant flux of electromagnetic radiation

Answer 27

Radiometer

Question 28

a shelter for thermometer, hydrometer and other instruments used in measuring temperature and humidity

Answer 28

Stevenson Screen

Question 29

consists of two horizontally placed thermometers. One records the minimum temperature of the day and the other records the maximum temperature of the day

Answer 29

Minumum and Maximum Thermometer

Question 30

instrument is swung freely in the air or is aerated by a fan, the loss of heat required to evaporate water from the wet bulb will cause it to show lower temperature reading

Answer 30

Sling Psychrometer

Question 31

this device use a human or animal hair under tension. Hair is hygroscopic, its length changes with humidity and the length change may be magnified by a mechanism and indicated on a dial or scale.

Answer 31

Hygrometer

Question 32

used to measure atmospheric pressure, instantaneously

Answer 32

Barometer

Question 33

recording minute fluctuation of atmospheric pressure

Answer 33

Barograph

Question 34

indicates both the wind direction and wind speed or simply the wind velocity. It is shaped like an airplane. The nose of the plane points to the direction from which the wind blows and the rotation of the propeller measures the wind speed.

Answer 34

Aero vane

Question 35

used for the measurement of wind speed. Either three or four metal hemispheres are mounted on arms which rotate freely about a vertical axis.

Answer 35

Anemometer

Question 36

Is a device used for measuring the amount of rainfall. It is 8 in. in diameter. The rainfall collected is being measured with the use of a dipstick with a measurementon it.

Answer 36

Rain Gauge

Question 37

rainfall entering the funnel collector is directed to the tipping bucket assembly. When the incremental amount of precipitation has been collected, the buckets assembly tips and activates a magnetic reed switch. The sample is discharged through the base of the gauge.

Answer 37

TIPPING BUCKET RECORDER AND RAIN GAUGE