Test 2

Question 1

Fog forms when the air temperature is

Answer 1

Equal to, or below the dewpoint temperature

Question 2

What does water tend to do when cooled?

Answer 2

Condense

Question 3

When cold air displaces warm air you have a

Answer 3

Cold front

Question 4

Fog most commonly encountered at sea is called

Answer 4

Advection fog

Question 5

Radiation fog is formed by a

Answer 5

Temperature inversion

Question 6

What color is an occluded front on the weather map?

Answer 6

Purple

Question 7

What kind of fog is produced by warm moist air passing over a cold surface?

Answer 7

Advection fog

Question 8

While on watch you notice that the air temperature is dropping and is approaching the dewpoint. Which type of weather should be forecasted?

Answer 8

Fog

Question 9

Fog that occurs on clear nights with light breezes and forms because the earths surface is cooling rapidly is known as

Answer 9

Radiation fog

Question 10

A weather front exists when

Answer 10

Air masses of different temperatures meet

Question 11

What is a stationary front look like on a map?

Answer 11

Alternating circles and triangles, red and blue

Question 12

Cold front symbols are

Answer 12

Blue triangles

Question 13

Warm fronts symbols are

Answer 13

Red circles

Question 14

An occluded front is caused by a

Answer 14

Cold front over taking a warm front

Question 15

What is the approximate geographic visibility of an object with a height above the water 70 feet for an observer with the height of 65 feet?

Answer 15

19 miles

1.17 x sq rt he + sq rt ho

Question 16

What factors determine safe speed?

Answer 16

State of the wind, sea, current, and the proximity of navigational hazards

Question 17

In restricted visibility a vessel being towed, if manned is required to sound which signal?

Answer 17

One prolonged in three short blasts

Question 18

The rules also require this factor to be taken into account when determining safe speed.

Answer 18

Location of vessels detected by radar

Question 19

In fog, you hear forward of your beam fog signal to prolong blast in succession every two minutes. What does the signal indicate?

Answer 19

Power driven vessel underway but stopped and making no way

Question 20

You’re underway and fog when you hear a whistle signal of one prolonged blast followed by Too $hort blast. The signal could indicate all the following except

Answer 20

A vessel being towed

Question 21

A local wind occurs during the daytime and caused by the different rates of warming of land and water is a

Answer 21

Seabreeze

Question 22

According to Buys ballots Law, when an observer in the northern hemisphere experience a northwest wind the center of low pressure is located to

Answer 22

Northeast

Question 23

In most cases, the direction of the apparent wind lies between the bow and

Answer 23

Direction of the true wind

Question 24

A warm air mass is characterized by

Answer 24

Stability

Question 25

The height of a wave is the vertical distance

Answer 25

From the crest to the trough

Question 26

When looking at the weather map, closely spaced pressure gradient lines would indicate

Answer 26

Highwinds

Question 27

The time interval between successive wave crest is called the

Answer 27

Period

Question 28

Fetch is the

Answer 28

Stretch of water over which a wave forming wind blows

Question 29

The Beaufort scale is used to estimate the

Answer 29

Wind speed

Question 30

And air mass that has moved down from Canada would most likely have the symbols

Answer 30

cPK

Question 31

You were at 30° north and 95° west approximately, where are you?

Answer 31

North America

Question 32

What two things decrease continuously with altitude in the atmosphere?

Answer 32

Pressure and temperature

Question 33

Is the temperature in the tropopause related to the temperature at the base of the troposphere?

Answer 33

No

Question 34

The gas that has the greatest variation from place to place in from time to time ....Lower atmosphere is

Answer 34

Carbon dioxide

Question 35

The difference of temperature between 233K and -40°F is

Answer 35

0°C

Question 36

The amount of radiation wavelength from an object is determined by its

Answer 36

Temperature

Question 37

The albedo is a measure of

Answer 37

Reflectivity

Question 38

The transport of heat and wind and ocean currents is what process?

Answer 38

Advective

Question 39

The polar side of a hill would tend to have what characteristic opposite the equator side of the hill?

Answer 39

The cooler, more moist, have vegetation more characteristic of higher altitude and latitude

Question 40

Heat energy released when water vapor changes to a liquid is called

Answer 40

Latent heat of condensation

Question 41

Melting of ice is what process for the atmosphere?

Answer 41

Heating

Question 42

Sinking air ______ by _________.

Answer 42

Cools | Compression

Question 43

Irregular heating of the earth surface could result from

Answer 43

Curvature of the earth, thickness of the atmosphere, length of the day

Question 44

The earth is tilted at an angle of 23.5° with respect to the place of its orbit around the sun. If the amount of tilt were increased to 40°, what could we expect in the middle latitudes?

Answer 44

Hotter summers and colder winters

Question 45

The only substance near the surface that is found naturally in the atmosphere as a solid, liquid and gas is

Answer 45

Water

Question 46

The primary source of oxygen for the earths atmosphere during the past half billion years or so appears to be

Answer 46

Photosynthesis

Question 47

Tibetans are above roughly what percent of the air molecules in the atmosphere?

Answer 47

50%

Question 48

Wind direction is

Answer 48

The direction from which the wind is blowing

Question 49

In the middle latitudes of the northern hemisphere, surface winds tend to blow ________ and _______ around an area of low pressure.

Answer 49

Clockwise | Inward

Question 50

Which of the following is most likely associated with Fairweather?

Answer 50

High-pressure area

Question 51

Generally weather in the middle latitudes tend to move from

Answer 51

West to east

Question 52

What provides a measure of the average speed of air molecules?

Answer 52

Pressure

Question 53

What is released as sensible heat during the formation of clouds?

Answer 53

Latent heat

Question 54

What are the processes of condensation and freezing?

Answer 54

Both released sensible heat into the environment

Question 55

Heat transferred from the surface of the moon can take place by

Answer 55

Radiation

Question 56

The sun emits its greatest intensity of radiation in what portion of the spectrum?

Answer 56

Infrared

Question 57

If the earths average temperature were to increase, the amount of radiation emitted from the earth surface would ________ And the wavelength of maximum radiation which shift toward ______ wavelengths.

Answer 57

Increase | Shorter

Question 58

The atmosphere greenhouse effect is produced mainly by the absorption in remission of

Answer 58

Infrared radiation by the atmosphere

Question 59

Low clouds retard surface cooling at night better than clear skies because

Answer 59

The clouds absorb and radiate infrared energy back earth

Question 60

The albedo of the moon is 7%, this means that

Answer 60

7% of the sunlight striking the moon is reflected

Question 61

Clouds _________ infrared radiation and _________ visible radiation

Answer 61

Absorb, reflect

Question 62

During the winter solstice in the northern hemisphere

Answer 62

All the above

Question 63

Which of the following helps to explain why even though northern latitudes experience 24 hours of sunlight on June 22, they are not warmer than the latitude further south?

Answer 63

All the above

Question 64

For maximum winter warmth, in the northern hemisphere large windows in the house should face

Answer 64

South

Question 65

Seasons are caused by

Answer 65

Changing distance between the earth and the sun, angle at which sunlight reaches the earth, length of the daylight hours

Question 66

Although the polar regions radiate away more heat energy then they receive by insulation in the course of the year, they are prevented from becoming progressively colder each year by the

Answer 66

Circulation of heat by the atmosphere and oceans

Question 67

In clear weather the air next to the ground is usually ________ Then the air above during the night and ________ then the air above during the day.

Answer 67

Colder | Warmer

Question 68

Assuming that the night will remain clear and calm and that predicted minimum temperature is 0°C, suddenly the wind speed increases and remains gusty throughout the night. The minimum temperature will most likely be

Answer 68

Higher than predicted due to mixing

Question 69

Thermal belts are

Answer 69

Warmer hillsides that are less likely to experience freezing conditions

Question 70

Which of the following is not a reason why water warms and cools much more slowly than land?

Answer 70

It takes more heat to raise the temperature of a given amount of land then it does to raise the temperature of water