Question 1

What types of weather changes accompany the passage of a dryline?

Accepted Answer

A dryline is a boundary that separates a

Question 2

Suppose a weather forecast states the following: Light rain and cold today with temperatures just above freezing; southeasterly winds shifting to westerly tonight; turning colder, with rain becoming mixed with snow, then changing to snow. Which of the following types of weather fronts would be responsible for this forecast?

Accepted Answer

A) cold-type occluded front 
B) warm-type occluded front 
C) cold front 
D) warm front 
A) cold-type occluded front 
B) warm-type occluded front 
C) cold front 
D) warm front

Question 3

Which of the following is an accurate statement about lake-effect snows?

Accepted Answer

A) They are most common in early spring. 
B) They are caused by mP air masses. 
C) They are enhanced by a large fetch. 
D) They result in heavy snowfall on the north sides of the lakes. 
A) They are most common in early spring. 
B) They are caused by mP air masses. 
C) They are enhanced by a large fetch. 
D) They result in heavy snowfall on the north sides of the lakes.

Question 4

Which of the following statements applies to a warm front?

Accepted Answer

A) In winter it is usually associated with cumulus clouds. 
B) It has cold air ahead of it. 
C) It is coloured blue on a weather map. 
D) It normally moves faster than a cold front. 
A) In winter it is usually associated with cumulus clouds. 
B) It has cold air ahead of it. 
C) It is coloured blue on a weather map. 
D) It normally moves faster than a cold front.

Question 5

Which of the following sequences gives the order of weather conditions you would likely experience in winter as you travel toward a warm front?

Accepted Answer

A) rain, snow, sleet, freezing rain 
B) snow, sleet, freezing rain, rain 
C) snow, freezing rain, hail, sleet 
D) freezing rain, snow, sleet, rain 
A) rain, snow, sleet, freezing rain 
B) snow, sleet, freezing rain, rain 
C) snow, freezing rain, hail, sleet 
D) freezing rain, snow, sleet, rain

Question 6

Refer to the above surface weather map.
-Between which of the following points is a warm front positioned?

Accepted Answer

A) between 3 and 4 
B) between 1 and 2 
C) between 2 and 5 
D) between 2 and 3 
A) between 3 and 4 
B) between 1 and 2 
C) between 2 and 5 
D) between 2 and 3

Question 7

Which of the following undergoes a downward motion during an upper-air front?

Accepted Answer

A) tropopause 
B) low-level jet 
C) mesopause 
D) stratopause 
A) tropopause 
B) low-level jet 
C) mesopause 
D) stratopause

Question 8

From which of the following directions is the wind at point 3 most likely coming from?

Accepted Answer

A) northeast 
B) southeast 
C) northwest 
D) southwest 
A) northeast 
B) southeast 
C) northwest 
D) southwest

Question 9

Which of the following conditions refers to a maritime polar air mass that reaches the Pacific Coast?

Accepted Answer

A) warm air 
B) absolutely unstable air 
C) moist air 
D) absolutely stable air 
A) warm air 
B) absolutely unstable air 
C) moist air 
D) absolutely stable air

Question 10

What is the typical cause of summer heat waves in southern Ontario? What are some of the health risks of these?

Accepted Answer

The typical cause of summer heat waves i

Question 11

Which of the following types of air masses has the highest actual water vapour content?

Accepted Answer

A) cP 
B) mP 
C) mT 
D) cT 
A) cP 
B) mP 
C) mT 
D) cT

Question 12

Referring to the diagram below, which of the following options states the name of the front and the position of the coldest air? ​

Accepted Answer

A) stationary front, with coldest air at 1 
B) stationary front, with coldest air at 2 
C) occluded front, with coldest air at 1 
D) occluded front, with coldest air at 2 
A) stationary front, with coldest air at 1 
B) stationary front, with coldest air at 2 
C) occluded front, with coldest air at 1 
D) occluded front, with coldest air at 2

Question 13

Explain how, without any meteorological instruments other than your eyes, you could identify the passage of an occluded front.

Accepted Answer

Without any meteorological instruments,

Question 14

What do the continental polar (cP) and continental arctic (cA) air masses have in common?

Accepted Answer

A) They both bring strong thunderstorms. 
B) They both form in summer only. 
C) They both originate over polar oceans. 
D) They both tend to be dry. 
A) They both bring strong thunderstorms. 
B) They both form in summer only. 
C) They both originate over polar oceans. 
D) They both tend to be dry.

Question 15

Which of the following describes the likely formation of occluded fronts?

Accepted Answer

A) A cold front overtakes a warm front. 
B) A warm front overtakes a cold front. 
C) Overrunning occurs along a warm front. 
D) A cold front overtakes a squall line. 
A) A cold front overtakes a warm front. 
B) A warm front overtakes a cold front. 
C) Overrunning occurs along a warm front. 
D) A cold front overtakes a squall line.

Question 16

Why do stationary fronts often exist along the Rocky Mountains?

Accepted Answer

A) Overrunning leads to the formation of clouds. 
B) Air sinks on the east side of the mountains and becomes warmer. 
C) Cold air masses cannot move up and over the mountain. 
D) Air rapidly rises up the slopes of the mountains during the afternoon. 
A) Overrunning leads to the formation of clouds. 
B) Air sinks on the east side of the mountains and becomes warmer. 
C) Cold air masses cannot move up and over the mountain. 
D) Air rapidly rises up the slopes of the mountains during the afternoon.

Question 17

Suppose a weather forecast states the following: Cool today, with rain becoming heavy by this afternoon; slightly warmer tomorrow; winds southeasterly, becoming westerly to northwesterly by tomorrow morning. Which of the following types of weather fronts would be responsible for this forecast?

Accepted Answer

A) cold-type occluded front 
B) cold front 
C) warm-type occluded front 
D) warm front 
A) cold-type occluded front 
B) cold front 
C) warm-type occluded front 
D) warm front

Question 18

Which of the following regions is the origin of the continental arctic (cA) air mass that enters Canada?

Accepted Answer

A) northern Canada and Alaska 
B) northern Atlantic Ocean 
C) northern Siberia 
D) Antarctica 
A) northern Canada and Alaska 
B) northern Atlantic Ocean 
C) northern Siberia 
D) Antarctica

Question 19

During which of the following conditions do lake-effect snows occur?

Accepted Answer

A) when an mT air mass moves over a warm body of water 
B) when an mT air mass moves over a cold body of water 
C) when a cP air mass moves over a cold body of water 
D) when a cP air mass moves over a warm body of water 
A) when an mT air mass moves over a warm body of water 
B) when an mT air mass moves over a cold body of water 
C) when a cP air mass moves over a cold body of water 
D) when a cP air mass moves over a warm body of water

What types of weather changes accompany the passage of a dryline?

Which of the following is an accurate statement about lake-effect snows?

Which of the following statements applies to a warm front?

Which of the following sequences gives the order of weather conditions you would likely experience in winter as you travel toward a warm front?

Refer to the above surface weather map. -Between which of the following points is a warm front positioned?

Which of the following undergoes a downward motion during an upper-air front?

From which of the following directions is the wind at point 3 most likely coming from?

Which of the following conditions refers to a maritime polar air mass that reaches the Pacific Coast?

What is the typical cause of summer heat waves in southern Ontario? What are some of the health risks of these?

Which of the following types of air masses has the highest actual water vapour content?

Referring to the diagram below, which of the following options states the name of the front and the position of the coldest air?

Explain how, without any meteorological instruments other than your eyes, you could identify the passage of an occluded front.

What do the continental polar (cP) and continental arctic (cA) air masses have in common?

Which of the following describes the likely formation of occluded fronts?

Why do stationary fronts often exist along the Rocky Mountains?

Suppose a weather forecast states the following: Cool today, with rain becoming heavy by this afternoon; slightly warmer tomorrow; winds southeasterly, becoming westerly to northwesterly by tomorrow morning. Which of the following types of weather fronts would be responsible for this forecast?

Which of the following regions is the origin of the continental arctic (cA) air mass that enters Canada?

During which of the following conditions do lake-effect snows occur?

Earth and Its Atmosphere

Energy: Warming Earth and the Atmosphere

Seasonal and Daily Temperatures

Atmospheric Humidity

Condensation: Dew, Fog, and Clouds

Stability and Cloud Development

Precipitation

Air Pressure and Winds

Wind: Small-Scale and Local Systems

Wind: Global Systems

Middle-Latitude Cyclones

Weather Forecasting

Thunderstorms

Tornadoes

Hurricanes

Earths Changing Climate

Global Climate

Air Pollution

Filters

Exam 11: Air Masses and Fronts

What types of weather changes accompany the passage of a dryline?

Which of the following is an accurate statement about lake-effect snows?

Which of the following statements applies to a warm front?

Which of the following sequences gives the order of weather conditions you would likely experience in winter as you travel toward a warm front?

Refer to the above surface weather map. -Between which of the following points is a warm front positioned?

Which of the following undergoes a downward motion during an upper-air front?

From which of the following directions is the wind at point 3 most likely coming from?

Which of the following conditions refers to a maritime polar air mass that reaches the Pacific Coast?

What is the typical cause of summer heat waves in southern Ontario? What are some of the health risks of these?

Which of the following types of air masses has the highest actual water vapour content?

Referring to the diagram below, which of the following options states the name of the front and the position of the coldest air? ​

Explain how, without any meteorological instruments other than your eyes, you could identify the passage of an occluded front.

What do the continental polar (cP) and continental arctic (cA) air masses have in common?

Which of the following describes the likely formation of occluded fronts?

Why do stationary fronts often exist along the Rocky Mountains?

Suppose a weather forecast states the following: Cool today, with rain becoming heavy by this afternoon; slightly warmer tomorrow; winds southeasterly, becoming westerly to northwesterly by tomorrow morning. Which of the following types of weather fronts would be responsible for this forecast?

Which of the following regions is the origin of the continental arctic (cA) air mass that enters Canada?

During which of the following conditions do lake-effect snows occur?

Earth and Its Atmosphere

Energy: Warming Earth and the Atmosphere

Seasonal and Daily Temperatures

Atmospheric Humidity

Condensation: Dew, Fog, and Clouds

Stability and Cloud Development

Precipitation

Air Pressure and Winds

Wind: Small-Scale and Local Systems

Wind: Global Systems

Middle-Latitude Cyclones

Weather Forecasting

Thunderstorms

Tornadoes

Hurricanes

Earths Changing Climate

Global Climate

Air Pollution

Filters

Referring to the diagram below, which of the following options states the name of the front and the position of the coldest air?