Weather Patterns

Question 0

_______major types of ______influence the weather in North America

Answer 0

Four

Air masses

Question 1

Scientists classify air masses according to _______and_______

Answer 1

Temperature

Humidity

Question 2

What is Maritime Tropical ?

Answer 2

Maritime air masses form over oceans

Warm humid air masses

Question 3

What is Maritime Polar ?

Answer 3

Cool,humid air masses that form over the icy cold North Pacific and N Atlantic oceans

Question 4

What is Continental Tropical ?

Answer 4

Continental air masses form over land

Hot,arid air mass

Question 5

What is Continental Polar ?

Answer 5

Form over Alaska and Canada

Very cold , dry air
This year= Polar vortex

Question 6

Name the 4 major air masses

Answer 6

1) Maritime Tropical
2) Maritime Polar
3) Continental Tropical
4) Continental Polar

Question 7

When an_______ moves into an area and_______ with other air masses it causes the_____ to change !

Answer 7

Air mass
Interacts
Weather

Question 8

To the U.S. Air mass are commonly moved by the ________________and________.

Answer 8

Prevealing westerlies

Jet streams

Question 9

Air mass generally move from ______to______

Answer 9

West

East

Question 10

When two air masses collide that have ____________and ___________,they DO NOT MIX easily .

Answer 10

Different temperatures

Humidity

Question 11

The boundary where the air masses meet becomes a _______.

Answer 11

Front

Question 12

_______and_______ weather often develop along a _____

Answer 12

Storms
Changeable
Front

Question 13

What are the 4 types of fronts ?

Answer 13

1) Cold Front
2) Warm Front
3) Stationary Front
4) Occluded Front

Question 14

A_______is a violent disturbance in the _______.

Answer 14

Storms

Atmosphere

Question 15

Storms involve sudden changes in ________that causes __________

Answer 15

Air pressure

Raid movement

Question 16

What is an Occluded front ?

Answer 16

Warm air mass caught between 2 cold air masses

Question 17

What is stationary Front ?

Answer 17

Cold air mass + hot air mass meet ,but cannot move each other

Question 18

What is a warm front ?

Answer 18

Fast moving warm air mass over takes slow cold air mass

Question 19

What is a cold front ?

Answer 19

(Remember Cold air is dense and intends to sink where warm air is less dense and tends to rise)
When fast-moving cold air mass runs into a slow moving warm air mass the denser cold air slides under the warm air and pushes it upward

Question 20

What are thunderstorms?

Answer 20

Small storm with heavy rain, thunder plus lightning

Form in large cumulonimbus clouds a.k.a. “thunderheads”

Question 21

What is lightning?

Answer 21

Sudden spark or electrical discharge, as positive and negative charges move around

Question 22

What is thunder?

Answer 22

The rapid heating of air by Lightning that expands suddenly and explosively

Question 23

What are tornadoes?

Answer 23

A tornado is a rapidly whirling funnel shaped cloud that reaches down from a storm cloud to touch earths surface

Question 24

__________most commonly develop in thick cumulonimbus clouds when warm, Humid air meets a cold, arid air mass

Answer 24

Tornadoes

Question 25

What is a tornado alley?

Answer 25

In the area U.S. where tornadoes occur more often than other parts of the US

Question 26

A_______means that tornadoes are possible in your area.

Answer 26

Tornado watch