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earth science > wheather quiz 2 > Flashcards

wheather quiz 2 Flashcards

1
Q

How do you measure percipitation?

A

Using a rain gauge

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2
Q

What are clouds

A

Liquid water droplets and/or ice crystals suspended in the atmosphere.

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3
Q

When do clouds form?

A

Clouds form when the temperature of the air cools below the dew point, condensing water vapor.

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4
Q

What do clouds also require

A

Clouds also require condensation surfaces (nuclei) such as dust, aerosols, & volcanic ash.

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5
Q

what acronym causes clouds?

A

R.E.C.C

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6
Q

What is fog?

A

Clouds very close to the Earth’s surface.

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7
Q

What is visibility?

A

The distance you can see along the Earth’s surface expressed in miles.

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8
Q

When does atmospheric transparency decrease?

A

it decreases when humans add pollutants to the atmosphere

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9
Q

When does transparency increase?

A

it increases following precipitation

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10
Q

What acts as a cleaner to the atmosphere?

A

precipitation

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11
Q

What causes weather to change

A

when air masses move into an area

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12
Q

What is air mass

A

a mass of air with uniform moisture and temperature characteristics

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13
Q

How are air masses named?

A

they are named based on their source region

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14
Q

What do we do to name air masses

A

we consider the moisture and temperature characteristics of the region source

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15
Q

what are fronts?

A

boundary (interface) between two air masses

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16
Q

description of a cold front

A

advancing cold air pushes warm air up violently and quickly creating storms on the frontal boundary.

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17
Q

What forms in cold fronts?

A

cumulonimbus clouds

18
Q

describe a warm front?

A

advancing cold air pushes warm air up gently and slowly creating gentlestorms in ftront of the boundary.

19
Q

describe an occluded front

A

– when two cold air masses meet they push the warm air between them upward.

20
Q

what do occluded fronts create?

A

unpredictable weather

21
Q

Describe a stationary front?

A

when a cold air mass meets a warm air mass and neither interact.

22
Q

What can stationary fronts create?

A

-Can create long periods of unstable conditions.

23
Q

What happens at the frontal boundaries?

A

Warm air is forced to rise because it is less dense. This creates convection and causes clouds to form and possibly precipitate

24
Q

What are Cyclones?

A

low pressure systems?

25
Q

describe cyclones

A

Lowest pressure at the center
Winds blow inward & counterclockwise
Associated with converging, warm air, cloudy, and stormy weather

26
Q

What are anticyclones?

A

high pressure systems

27
Q

describe anticyclones

A

Highest pressure at the center
Winds blow outward & clockwise
Associated with clear, cool, calm weather
H.O.C (High, Outward, Clockwise)

28
Q

Where do fronts typically move?

A

southwest to northeast

29
Q

What are most storms associated with?

A

Most storms are associated with high winds, heavy precipitation, and low pressure cyclones.

30
Q

What are hurricanes?

A

low pressure cyclone

31
Q

Describe formation and fuel of hurricanes.

A

Form in late summer to early fall
Form off the coast of Africa near the equator
Require warm ocean water
Low pressure
Strong winds

32
Q

how many stages of hurricanes are there?

A

5

33
Q

Where are hurricanes pushed to and why?

A

Hurricanes are pushed west toward the USA by the prevailing winds between 0˚ and 30˚N and bend to the right due to the Coriolis Force.

34
Q

What is the eye of the storm?

A

The Eye is the center of the Low pressure storm and has the lowest pressure readings.

35
Q

how are conditions inside the eye

A

Conditions are relatively clear and calm inside the Eye.

36
Q

how do hurricanes lose their streangth?

A

*Hurricanes lose their strength as they move onto land or move away from warm waters.

37
Q

What are thunderstorms?

A

A heavy rain storm accompanied by thunder and lightning

38
Q

What is the deadliest aspect of thunderstorms?

A

The lightning is the deadliest aspect of these storms.

39
Q

How do thunderstorms form?

A

Convection currents push warm moist air upward and cool air down.

40
Q

What are tornadoes

A

The most violent of all storms. A tornado is a rapidly rotating, extremely low pressure storm that drops down from a thunderstorm cloud.

41
Q

What are the differences of tornadoes between hurricanes

A

Form over land (Midwest USA)
Smaller in diameter
Faster wind speeds
Last only for minutes, not days
Winds are the most dangerous aspect

42
Q

what is a blizzard?

A

Storms with high wind speeds and heavy snow fall.
Essentially a winter hurricane.

earth science (21 decks)

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