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ENV Lecture Final > Weather > Flashcards

Weather Flashcards

1
Q

Describe MN’s Climate

A

Solar radiation

Humid Continental

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2
Q

Solar Radiation

A

Axis tilt creates the day length and amount of sun during the day

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3
Q

Humid Continental

A

Difference in humidity in summer vs winter

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4
Q

Why does it get so cold and so hot in MN?

A

The wide temperature range is due to the hot air from the southwest and the cold air from the arctic

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5
Q

What is the polar vortex?

A

Low pressure in the upper atmosphere near the north pole

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6
Q

What is the jet stream?

A

River of air that bends around pressure systems

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7
Q

Where does the weather primarily come from during the spring/summer?

A

The west

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8
Q

What is albedo?

A

Reflected sunlight

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9
Q

What has higher albedo; a lake or woods?

A

Lake

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10
Q

How does a large body of water affect the nearby temperature?

A

Lowers temperature

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11
Q

How does a slope/valley affect temperatures in the bottom of the valley?

A

Cool air drainage
Colder in the valley
Hot air rises

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12
Q

Where is the driest part of MN?

A

Northwest

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13
Q

Where is the wettest part of MN?

A

Southwest

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14
Q

What is humidity?

A

Amount of water vapor in the air

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15
Q

What is dew point?

A

Temperature at which water condenses and dew forms

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16
Q

Where is it the windiest in MN?

A

Buffalo Ridge

Southwest

17
Q

What causes tornadoes?

A

Instability in temperature

18
Q

Why are tornadoes more likely in the spring?

A

Increase of warm, Gulf moisture into the central part of the country that clashes with contrasting cold, dry air form the North

19
Q

Why are tornadoes more likely in the afternoon?

A

Ground surface is heating up and the upper atmosphere may still be cold from the morning

20
Q

What is evapotranspiration?

A

Water transferred from the land to the atmosphere by evaporation from soil and transpiration from plants

21
Q

How is evapotranspiration related to P/E ratio?

A

P/E is a measurement of how much water availability there is and evapotranspiration is the reuptake of water from the environment

22
Q

Where in the state is the lowest P/E ratio?

A

Southwest

23
Q

Where in the state is the highest P/E ratio?

A

Northeast

24
Q

What happens when cold and warm fronts collide?

A

Thunderstorms

25
Q

How much longer is the day length now than when the course started?

A

2 hours and 3 minutes longer

26
Q

When is the earliest you can plant a garden in St. Peter without fear of frost or freezing temperatures?

A

Around April 29th

27
Q

Where is the warmest; north slope, south slope, valley bottom?

A

South slope

ENV Lecture Final (8 decks)

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