Aerospace Module #3B

Front 1

Between 30 degrees north and south latitude and the equator, the movement of air toward the equator is called ?

Back 1

trade winds

Front 2

The Northern Hemisphere is tilted directly toward the sun on June 21. This is called the summer_______.

Back 2

solstice

Front 3

The sun heats the earth through a method known as _______.

Back 3

radiation

Front 4

The sun heats parts of the earth _______ than others.

Back 4

more

Front 5

The center of a hurricane is called an ______.

Back 5

eye

Front 6

Hurricanes are classified into ____ categories.

Back 6

5

Front 7

To be classified as a hurricane, the winds must go above _____ miles per hour.

Back 7

74

Front 8

If a tornado is coming and you are in open country, move at _______ angles away from it.

Back 8

Right

Front 9

If a tornado is coming and time permits, get to a _____ or underground.

Back 9

Basement

Front 10

A tornado's _______ are the main reason for the tremendous destruction associated with tornadoes.

Back 10

winds

Front 11

_________ is the most dangerous part of a thunderstorm.

Back 11

lightning

Front 12

The ______ stage of a thunderstorm is dominated by updrafts.

Back 12

building

Front 13

________ come from cumulonimbus clouds and always possess thunder and lightning.

Back 13

thunderstorms

Front 14

When three differing air masses are involved with each other, it is called an _______ front.

Back 14

occluded

Front 15

When air masses bump against each other, but not strong enough to force movement, it is called a _____ front.

Back 15

stationary

Front 16

A ____ front occurs when the air moving into the area is colder than the already present warmer air.

Back 16

cold

Front 17

A ______ front occurs when warm air moves into an area of colder air and they collide.

Back 17

warm

Front 18

A boundary between two air masses is called a _________.

Back 18

front

Front 19

Air masses are identified by a two-letter code consisting of a _____ letter and a _________ letter.

Back 19

capital lowercase

Front 20

An ____ _____ is a huge body of air, usually 1,000 miles or more across that has the same temperature and moisture characteristics.

Back 20

air mass

Front 21

Rain that freezes on contact with the ground or highway is called ___ _____.

Back 21

freezing rain

Front 22

__________ is the general term given to the various types of condensed water vapor that fall to the Earth's surface, such as rain or snow.

Back 22

precipitation

Front 23

Many types of ______ clouds are associated with turbulence.

Back 23

cumulus

Front 24

________ is the unrest or disturbance of the air and refers to its instability.

Back 24

turbulence

Front 25

_______ is the cloud that produces thunderstorms with thunder and lightning.

Back 25

cumulonimbus

Front 26

________ is heavier and darker than stratus and produces rain that can last for hours.

Back 26

nimbostratus

Front 27

______ clouds are white, thin, wispy clouds, usually in patches, filaments, hooks or bands and are mainly composed of ice crystals.

Back 27

cirrus

Front 28

_______ has a very uniform appearance with very little vertical development.

Back 28

stratus

Front 29

______ is a fair weather cloud indicating good weather.

Back 29

cumulus

Front 30

______ is composed of tiny droplets of liquid water in contact with the surface. It is actually a cloud that is touching the ground.

Back 30

fog

Front 31

Clouds and fog are products of ________.

Back 31

condensation

Front 32

Converting water vapor to a liquid is called _______.

Back 32

condensation

Front 33

The temperature at which the air becomes saturated is called the ____ _____.

Back 33

dew point

Front 34

When a parcel of air is holding all of the water it can, it is called ________.

Back 34

saturation

Front 35

_____ is the most important element in the development of weather.

Back 35

moisture

Front 36

An aneroid _____ is found in weather stations and gives a permanent record of pressure readings.

Back 36

barometer

Front 37

Scientists and meteorologists mainly use a ______ barometer.

Back 37

mercury

Front 38

The weight or push on the Earth's surface is called _____ _____.

Back 38

atmospheric pressure

Front 39

Warmer temperatures require ______ runways for takeoff.

Back 39

longer

Front 40

_______ is a measure of molecular motion expressed on a man-made scale.

Back 40

temperature

Front 41

______ is the total energy of all molecules within a substance.

Back 41

heat

Front 42

A _______ is defined as a downdraft or downburst of wind.

Back 42

microburst

Front 43

A strong tailwind will _____ a plane's air speed.

Back 43

increase

Front 44

Airplanes takeoff _____ the wind because the wind gives the plane more lift.

Back 44

into

Front 45

To determine ______ ______ you use temperature and wind speed to explain how cold it feels.

Back 45

wind chill

Front 46

A scale for estimating winds on either land or sea is called the _______ scale.

Back 46

Beaufort

Front 47

A knot equals _____ mph.

Back 47

1.1

Front 48

______ ________ is defined as the direction from which the wind is blowing.

Back 48

wind direction

Front 49

______ is a body of air in motion.

Back 49

wind

Front 50

The _____ ______ is wind that usually crosses the US at 30,000-35,000 feet and generally moves in a west to east direction.

Back 50

jet stream

Front 51

Winds at about 60 degrees latitude result from the air over the poles cooling, sinking and spreading out. This area of winds is called the Polar _______.

Back 51

easterlies

Front 52

Prevailing _______ in the Northern Hemisphere are responsible for many of the weather movements across the US and Canada.

Back 52

Westerlies

Front 53

Converging trade winds can cause an area of calm winds. This area of calm is called the ______.

Back 53

doldrums

Front 54

________ ________ is the amount of humidity in the air compared to its total water vapor capacity at a given temperature.

Back 54

relative humidity

Front 55

Warm air molecules are spaced ______ _______ than cool air molecules.

Back 55

farther apart

Front 56

Warm air _______. This is an ingredient for producing clouds.

Back 56

rises

Front 57

Thunderstorms have three stages: ______, _____ and _______.

Back 57

building, mature, dissipating

Front 58

There are three basic cloud forms: _________, ________ and ________.

Back 58

cumulus, stratus, cirrus

Front 59

The sun heats the Earth and is the fundamental cause of our _______.

Back 59

weather

Front 60

The lowercase letter of an air mass is either an ___ (_________) or c (_________).

Back 60

m (maritime), c (continental)

Front 61

Maritime - m, means moisture, water (true/false)

Back 61

TRUE

Front 62

Continental - c, means dry (true/false)

Back 62

TRUE

Front 63

The spring (vernal) equinox occurs on March 21, and the _________ equinox occurs on September 22. On both occasions, the sun's direct rays strike the equator.

Back 63

spring (vernal), fall (autumnal)

Front 64

The Fujita Wind Damage Scale explains the categories of ______ _____and expected damage for tornadoes.

Back 64

wind speed

Front 65

The Earth rotates on its axis in a _________ direction in the Northern Hemisphere.

Back 65

counterclockwise

Front 66

The Earth rotates on its axis at an angle of ___ degrees.

Back 66

23.5

Front 67

On December 22, the Northern Hemisphere is tilted directly away from the sun. This is called the winter_______.

Back 67

solstice

Front 68

Moisture, in its gaseous state, is called _______ ______.

Back 68

water vapor

Front 69

Fahrenheit's freezing point is____degrees and its boiling point is ____.

Back 69

32, 212

Front 70

Clouds are made up of minute droplets of water or tiny_____ of _____ or both.

Back 70

crystals of ice

Front 71

Celsius freezing point is ____degrees and its boiling point is ____degrees.

Back 71

0, 100

Front 72

An air mass, temperature or latitude is placed into four categories: polar(P), _____(A), _______(T) and equatorial(E).

Back 72

arctic, tropical

Front 73

About ____ % of the sun's radiation is absorbed by the Earth's surface. The other _____% is reflected and ________ in the atmosphere and space.

Back 73

50, 50, absorbed

Front 74

The uneven or unequal heating causes _______ and pressure differences. This creates circulation or the movement of air.

Back 74

temperature