Exam 1

Question 0

Ozone is where and absorbs what?

Answer 0

Concentrated in the stratosphere and absorbs ultraviolet rays

Question 1

Percentages of earths atmosphere

Answer 1

78% nitrogen
21% oxygen
1% other

Question 2

A greenhouse gas absorbs what?

Answer 2

Primarily absorbs outgoing infrared radiation emitted by the earth

Question 3

What gas is not considered a greenhouse gas?

Answer 3

Oxygen

Question 4

Warming with height in the stratosphere is mainly caused by what?

Answer 4

Absorption of ultraviolet radiation by ozone

Question 5

What happens in an isothermal layer?

Answer 5

Temperature is constant with height

Question 6

The rate at which temperature decreases with increasing altitude is known as what?

Answer 6

Lapse rate

Question 7

In the ISA, the temp lapse rate for the troposphere is what?

Answer 7

2 degrees Celsius per 1,000 feet

Question 8

What happens in a temp inversion

Answer 8

Temp increases with increasing height

Question 9

Average sea level pressure

Answer 9

1013 mb

29. 92 hg
30. 7 psi

Question 10

Energy is provided to the earth from the sun by?

Answer 10

Radiation

Question 11

A substance commonly found in the troposphere in gas, liquid, and solid form is what?

Answer 11

Water

Question 12

The earths albedo is approximately what percent?

Answer 12

30%

Question 13

Water bodies heat up _____ and cool off _____ than land surfaces

Answer 13

More slowly, more slowly

Question 14

Temp at 500 ft MSL is 7 degrees C and the lapse rate is 2 degrees/1,000 ft, what will be the temp at 4,500 ft MSL?

Answer 14

-1 degrees Celsius

Question 15

When is e warmest time of day?

Answer 15

Late afternoon

Question 16

For max solar warming during winter in a house located in the Southern Hemisphere mid-latitudes, windows should face towards what direction?

Answer 16

North

Question 17

Most of the radiative energy emitted by the earth is what type of radiation?

Answer 17

Infrared

Question 18

When is earth radiating energy at the greatest rate/intensity, warm or cold?

Answer 18

Warm

Question 19

Coldest night time temps are most likely to occur on what type of nights?

Answer 19

Clear, calm nights

Question 20

The national Wx service office near FLG launches Wx balloons at what times daily? (MST)

Answer 20

5 am and 5 pm MST

Question 21

A station at sea level measures an air pressure of 30.0” hg. What would you expect the air pressure to be at 2,000 ft MSL?

Answer 21

28” hg

Question 22

The Density altitude at a high elevation airport with very warm temps would likely be compared to the standard atmospheric conditions?

Answer 22

Higher than standard atmospheric conditions

Question 23

Which is the highest altitude above MSL: 850 mb, 850 meters MSL, 1030 hPa, 9,000 ft MSL

Answer 23

9,000 ft MSL

Question 24

How does flying from a warm to a cold air mass influence the altitude indicated by a pressure altimeter?

Answer 24

The altimeter reading may be to high

Question 25

The atmospheric pressure at an altitude of 30,000 ft is approximately what in mb?

Answer 25

300 mb

Question 26

The horizontal pressure gradient is identified by using what?

Answer 26

The spacing of isobars

Question 27

A wind reported as 225 would be blowing from what direction?

Answer 27

Southwest

Question 28

A sea breeze is caused by what?

Answer 28

Temp differences between land and ocean

Question 29

What wind speed and altitude produces the strongest Coriolis effect?

Answer 29

Fast wind speed and high altitude

Question 30

When the pressure gradient force is balanced by the Coriolis force, the air current is termed as what?

Answer 30

Geostrophic wind

Question 31

Surface winds blow across isobars toward lower pressure because of what force?

Answer 31

Frictional drag force

Question 32

Ridges are what?

Answer 32

Elongated areas of high pressure

Question 33

Cyclonic flow in the northern hemisphere blows in what direction and what type of pressure area?

Answer 33

Counterclockwise around a low pressure area

Question 34

We can generally expect vertical air motion to be ____ above an area of surface low pressure and _____ above an area of surface high pressure

Answer 34

Rising, sinking

Question 35

Wind the wind near the surface is typically ____ than the geostrophic wind aloft and pointed at an angle toward _____ pressure

Answer 35

Slower, lower

Question 36

Consider a contour line on a 500 mb upper air chart labeled with 5640. This number is approximate pressure.... 1. Approximate pressure inches of mercury or 2. tents of millibars 3. height of the 500 mb pressure level in feet or 4. in meters

Answer 36

Height of the 500 mb pressure level in meters

Question 37

On an upper level chart, the winds tend to blow?

Answer 37

Parallel to the height contour lines

Question 38

The standard atmospheric altitude in MSL corresponding to the 700 mb chart?

Answer 38

10,000 feet MSL

Question 39

A wind flow pattern that follows a north south trajectory is called?

Answer 39

Meridional wind

Question 40

If an upper level air current in the northern hemisphere is blowing from the south, then you can expect lower pressure to be located to what direction?

Answer 40

West

Question 41

The Coriolis effect is the result of what?

Answer 41

Earth rotation

Question 42

If wind speed increases from 10 knots to 30 knots, how much has the force of that wind increased?

Answer 42

The wind force is then 9 times as strong

Question 43

Sea breeze, land breeze, and lake breeze are examples of what?

Answer 43

Thermal circulations?

Question 44

Airflow from the ocean onto land would most likely be expected at what time of day?

Answer 44

During the afternoon

Question 45

What type of surface would cause the largest difference between surface and upper level wind velocity?

Answer 45

Mountainous topography

Question 46

What is the primary source for direct measurement of upper level winds?

Answer 46

Radiosondes

Question 47

Airflow around a surface low pressure center is association with_______ motion?

Answer 47

Convergent, rising