earth science apr 24 Flashcards

(70 cards)

1
Q

What are the primary gases released during a volcanic eruption?

A

Water vapor, carbon dioxide, sulfur dioxide, and ash.

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2
Q

True or False: Volcanic eruptions can lead to short-term cooling of the Earth’s climate.

A

True.

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3
Q

Fill in the blank: Volcanic eruptions can inject _______ into the stratosphere, affecting climate patterns.

A

aerosols.

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4
Q

Which volcanic eruption in 1991 had a significant impact on global temperatures?

A

Mount Pinatubo.

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5
Q

What is the term for the cooling effect caused by volcanic ash and sulfur dioxide in the atmosphere?

A

Volcanic winter.

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6
Q

How can volcanic eruptions affect precipitation patterns?

A

They can lead to changes in rainfall distribution and intensity.

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7
Q

What phenomenon can result from the increase in aerosols in the atmosphere after a volcanic eruption?

A

Global dimming.

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8
Q

True or False: Volcanic eruptions have no long-term effects on climate.

A

False.

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9
Q

Short Answer: Name one way volcanic eruptions can affect agriculture.

A

By altering temperature and precipitation patterns.

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10
Q

Which gas released by volcanoes contributes to the greenhouse effect?

A

Carbon dioxide.

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11
Q

Fill in the blank: The _______ effect refers to the warming that can occur after a volcanic eruption due to greenhouse gases.

A

greenhouse.

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12
Q

What is the impact of volcanic ash on sunlight?

A

It can block sunlight, leading to cooling.

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13
Q

True or False: Volcanic eruptions can lead to acid rain.

A

True.

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14
Q

Multiple Choice: What is a common impact of volcanic eruptions on local weather?

A

Changes in temperature and precipitation.

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15
Q

What is the role of sulfur dioxide in climate change following a volcanic eruption?

A

It can form sulfate aerosols that reflect sunlight.

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16
Q

How long can the climatic effects of a major volcanic eruption last?

A

From a few months to several years.

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17
Q

Fill in the blank: Volcanic eruptions can increase the amount of _______ in the atmosphere.

A

aerosols.

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18
Q

Short Answer: What can be a consequence of prolonged volcanic activity on climate?

A

Persistent cooling trends.

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19
Q

True or False: All volcanic eruptions cause significant climate change.

A

False.

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20
Q

What is the main way that volcanic eruptions influence global temperatures?

A

By injecting large quantities of ash and gases into the stratosphere.

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21
Q

Which type of volcanic eruption has the most significant impact on climate?

A

Explosive eruptions.

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22
Q

Fill in the blank: The _______ of a volcanic eruption can determine its climatic impact.

A

magnitude.

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23
Q

Multiple Choice: Which of the following does NOT result from a volcanic eruption?

A

Increased ozone levels.

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24
Q

Short Answer: What is one method scientists use to study the effects of past volcanic eruptions on climate?

A

Analyzing ice cores.

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25
True or False: Volcanic eruptions can contribute to both short-term cooling and long-term warming.
True.
26
What is a potential health risk associated with volcanic ash fallout?
Respiratory problems.
27
What pages must be read and interpreted for the test?
Pages 2, 3, 12, 13, 14, 15 in the ESRT
28
What factors control/affect climate?
* Latitude * Elevation * Large bodies of water * Ocean currents * Mountains * Global (planetary) winds
29
What effect does a volcanic eruption have on weather/climate?
Reduces sunlight reaching the ground, causing temporary cooling
30
What causes ocean currents?
Global winds pushing on the surface of the water in the oceans
31
How do warm ocean currents affect air temperatures?
Warm ocean currents warm the air above them
32
How do cold ocean currents affect air temperatures?
Cold ocean currents cool the air above them
33
What phenomenon explains the rain shadow effect?
Orographic lift
34
What is the effect of proximity to large bodies of water on climate?
Moderation of climates for locations near large bodies of water
35
What skills must be developed regarding climate graphs?
Ability to read and interpret data in climate graphs
36
How do clouds form at cold and warm fronts?
Clouds form through condensation of air moisture
37
How do winds behave around a center of low air pressure?
Winds blow inward and counterclockwise
38
How do winds behave around a center of high air pressure?
Winds blow outward and clockwise
39
What is a synoptic weather map?
A map that includes information on fronts and mid-latitude cyclones
40
What is the purpose of isotherms on a map?
To represent areas of equal temperature
41
What is the purpose of isobars on a map?
To represent areas of equal atmospheric pressure
42
What type of air pressure is found in the center of a hurricane?
Low air pressure
43
What do hurricanes need to form?
Warm ocean water, moisture in the atmosphere, and low wind shear
44
Where do hurricanes typically form?
Over warm tropical oceans
45
What fuels a hurricane?
Warm, moist air
46
How do winds spin in a hurricane?
Counterclockwise in the Northern Hemisphere
47
By what criteria is a hurricane categorized?
Saffir-Simpson Hurricane Wind Scale
48
What is the eye of a hurricane?
The calm center of the hurricane
49
What is the eye wall of a hurricane?
The area of intense winds and rain surrounding the eye
50
What are the conditions like in the eye of a hurricane?
Calm and clear
51
What causes hurricanes to travel across the surface of the oceans?
Global winds
52
What causes hurricanes to change their direction of movement?
Steering winds in the atmosphere
53
What situations cause a hurricane to die out?
* Moving over cooler waters * Encountering land
54
What is a storm surge?
A rise in sea level due to a hurricane's winds
55
What dangers are involved when a hurricane crosses onto land?
Flooding, wind damage, and storm surge
56
What precautions should people take in the event of a hurricane?
* Evacuation * Boarding up windows
57
What is orographic lift?
The process of air rising over mountains, causing precipitation
58
What is Lake Effect Snow?
Snowfall caused by cold air passing over warmer lake waters
59
What does the El Nino effect describe?
A climate pattern affecting weather conditions globally
60
What must be understood about a station model?
Reading weather data presented in a standardized format
61
What is the formula to calculate the groundspeed of a hurricane or tornado?
Speed = distance traveled divided by the time it took to travel
62
What is the characteristic air pressure found in the center of a tornado?
Very low air pressure
63
Where do tornadoes most commonly form in the USA?
In Tornado Alley
64
What type of weather conditions are needed to cause a tornado to form?
Severe thunderstorms with wind shear
65
In what direction do tornadoes usually travel?
Generally northeast
66
How are tornadoes classified on the Fujita scale?
Based on the damage they cause
67
What are the dangers involved to people and property in a tornado?
Destruction of buildings, injury, and loss of life
68
What precautions should people take in the event of a tornado?
* Seek shelter * Avoid windows
69
What is a direct relationship?
When one variable increases, the other also increases
70
What is an inverse relationship?
When one variable increases, the other decreases