_____ The lifting condensation level is the level at which, if an air parcel is forced tolift to it, it will keep going.

0

1000

2000

3000

0 5 10 15 20 25 30 35

Temperature (°C)

Hei

ght

abov

e th

e gr

ound

(m

)

level offreeconvection

Dewpoint

liftingcondensationlevel

F

If you were marked wrong for marking this one “F,”please turn back your quiz to me after class so thatyou can get a point for it.

_____ Which force is what sets the air in motion, causing the wind to blow?a. pressure gradient forceb. Coriolis forcec. Centripetal forced. friction

a

_____ A ______________________ is a wind that is formed when there is a balancebetween the pressure gradient force and the Coriolis force.

a. gradient windb. geostrophic windc. ageostrophic windd. sea breeze

b

_____ Which of the following cannot possibly be a mesoscale weather feature?a. a thunderstormb. a tornadoc. a sea breezed. a low pressure system

d

_____ Which of the following does not measure wind (speed and/or direction)?a. an anemometerb. a barometerc. a rawinsonde or radiosonded. an aerovane

surface wind speedair pressure

vertical profiles of wind speed & directionsurface wind speed & direction

_____ Which of the following winds blows uphill?a. a chinookb. a mountain breezec. a valley breezed. a katabatic breeze

downhilldownhill

downhilluphill

b

c

_____ A cup anemometer measures wind direction.F

_____ Which of the following circulations in the diagrams below occurs at night?

oceanland

L H

a. H L

oceanland

H L

b. HL

_____ Which of the following circulations in the diagrams below occurs at night?

land ocean

WARM COOL

DAY

_____ Which of the following circulations in the diagrams below occurs at night?

land ocean

H L

L H

DAY

sea breeze

_____ Which of the following circulations in the diagrams below occurs at night?

land ocean

COOL WARM

NIGHT

_____ Which of the following circulations in the diagrams below occurs at night?

land ocean

NIGHT

L H

LHland breeze

_____ Which of the following circulations in the diagrams below occurs at night?

oceanland

L H

a. H L

oceanland

H L

b. HL

b

_____ During the afternoon, you will most likely experience an onshore wind at anoceanside beach.

T

_____ The speed of the wind at locations a and b on the isobaric chart are most likelya. much faster than a geostrophic wind.b. a little faster than a geostrophic wind.c. the same as that of a geostrophic wind.d. a little slower than a geostrophic wind.

b

a

d

_____ A temperature inversion is an extremely unstable situation.

0

1000

2000

3000

0 5 10 15 20 25 30 35

Environmentallapse rate = 4°C/km

Temperature (°C)

Hei

ght

abov

e th

e gr

ound

(m

)

Dry adiabaticlapse rate

Moist adiabaticlapse rate

Absolutely stable

_____ A temperature inversion is an extremely unstable situation.

Absolutely stable

0

1000

2000

3000

0 5 10 15 20 25 30 35

Temperature (°C)

Hei

ght

abov

e th

e gr

ound

(m

)

warmingaloft

coolingnear-sfc.

and/or

_____ A temperature inversion is an extremely unstable situation.

Absolutely stable

0

1000

2000

3000

0 5 10 15 20 25 30 35

Temperature (°C)

Hei

ght

abov

e th

e gr

ound

(m

)

warmingaloft

coolingnear-sfc.

and/or

F

_____ Cloud droplets are much smaller than the average raindrop.T

Fig. 5-15, p.121

_____ Surface winds are cross-isobaric, blowing towards lower pressure.

Fig. 6-19a, p.159

Geostrophic wind

T

_____ In clouds that are mixed with supercooled liquid droplets and ice crystals,the ice crystals tend to grow, because there are more water vapor moleculessurrounding the ice crystals than around the liquid droplets.

Fig. 5-20, p.125

F

Fig. 4-5, p.81

_____ The Coriolis force is greatest at the Equator.

Fig. 6-14, p.153

F

The Coriolis force is strongest when the wind speed is ________ at ________ latitudes.high low high low

highhigh

In a stable atmosphere, one would expect to see __________________ clouds.stratiform cumuliformstratiform