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Questions and Answers
What is the term for the atmospheric condition that occurs when there is a horizontal net inflow of air into a specified region?
What is the term for the atmospheric condition that occurs when there is a horizontal net inflow of air into a specified region?
In terms of wind direction, what is the average angle at which the wind crosses the isobars?
In terms of wind direction, what is the average angle at which the wind crosses the isobars?
What keeps air from rushing off into space despite the pressure gradient force acting on it?
What keeps air from rushing off into space despite the pressure gradient force acting on it?
Winds blow in which direction relative to high and low-pressure areas?
Winds blow in which direction relative to high and low-pressure areas?
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What is the relationship between air pressure and height?
What is the relationship between air pressure and height?
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If facing north, what wind direction would be indicated if the wind is coming from your left?
If facing north, what wind direction would be indicated if the wind is coming from your left?
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What is the name of the instrument used to measure wind speed and direction?
What is the name of the instrument used to measure wind speed and direction?
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Which of the following has been traditionally used to generate electricity since the early 1970s?
Which of the following has been traditionally used to generate electricity since the early 1970s?
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Which statements about air density are correct?
Which statements about air density are correct?
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Which statement correctly describes the relationship between pressure and density?
Which statement correctly describes the relationship between pressure and density?
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What happens to atmospheric pressure as altitude increases?
What happens to atmospheric pressure as altitude increases?
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How does horizontal temperature difference affect air?
How does horizontal temperature difference affect air?
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Which statement correctly describes the prevailing wind and the wind of least frequency?
Which statement correctly describes the prevailing wind and the wind of least frequency?
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What is the immediate effect of the removal of air from a surface?
What is the immediate effect of the removal of air from a surface?
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Identify the incorrect statement about atmospheric pressure.
Identify the incorrect statement about atmospheric pressure.
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What allows you to identify the smell of the burger from the restaurant?
What allows you to identify the smell of the burger from the restaurant?
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What defines the degree of hotness or coldness in air?
What defines the degree of hotness or coldness in air?
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Which of the following statements about wind is true?
Which of the following statements about wind is true?
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Select the statement that is true.
Select the statement that is true.
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What is the net force acting on air as it moves from higher pressure to lower pressure?
What is the net force acting on air as it moves from higher pressure to lower pressure?
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What type of pressure gradient produces strong winds?
What type of pressure gradient produces strong winds?
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What can occur as a result of the imbalance between the Coriolis force and pressure gradient force?
What can occur as a result of the imbalance between the Coriolis force and pressure gradient force?
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Which winds blow continuously and predictably over long distances?
Which winds blow continuously and predictably over long distances?
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What is the initial energy source that produces winds?
What is the initial energy source that produces winds?
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What is the most commonly used barometer that consists of a glass column with mercury and inches markings?
What is the most commonly used barometer that consists of a glass column with mercury and inches markings?
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Which condition is associated with surface high pressure areas?
Which condition is associated with surface high pressure areas?
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When observing a barometer, what would a rising reading indicate about the weather?
When observing a barometer, what would a rising reading indicate about the weather?
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What is the correct conversion of 15 hPa to millibar?
What is the correct conversion of 15 hPa to millibar?
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What type of map do meteorologists use to show areas of high and low pressure as well as wind direction?
What type of map do meteorologists use to show areas of high and low pressure as well as wind direction?
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What effect does the Coriolis effect have on currents in the northern and southern hemispheres?
What effect does the Coriolis effect have on currents in the northern and southern hemispheres?
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What is the wind belt observed on the poleward side of the polar front called?
What is the wind belt observed on the poleward side of the polar front called?
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What happens to air moving eastward more slowly than the earth rotates?
What happens to air moving eastward more slowly than the earth rotates?
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What is the initial cause of atmospheric convection and global winds?
What is the initial cause of atmospheric convection and global winds?
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Chinook is classified as which type of wind?
Chinook is classified as which type of wind?
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Which winds are also known as the Roaring Forties?
Which winds are also known as the Roaring Forties?
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What is the primary characteristic of westerly winds?
What is the primary characteristic of westerly winds?
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Westerly winds in the Southern Hemisphere are generally regarded as:
Westerly winds in the Southern Hemisphere are generally regarded as:
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What is a defining feature of polar fronts?
What is a defining feature of polar fronts?
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Which statement accurately describes jet streams?
Which statement accurately describes jet streams?
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What primarily determines the direction of land and sea breezes at coastal regions?
What primarily determines the direction of land and sea breezes at coastal regions?
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Study Notes
Multiple Choice Questions - Unit Test
- Question 1: Air density is the mass of air above a given point. Most of the atmosphere is concentrated near the surface, causing air pressure to decrease with altitude. If temperature is constant, air density decreases as temperature increases, and vice versa. Only one of these statements is correct.
- Question 2: If temperature is constant, air density decreases with increasing pressure, and vice versa. Air pressure is highest at the surface and decreases with altitude. Two statements are correct.
- Question 3: Atmospheric pressure always decreases with increasing altitude. Air temperature is the measure of hotness or coldness. Cold air is denser than warm air at the same pressure. Two statements are correct.
- Question 4: Horizontal temperature differences create horizontal pressure differences. These cause differences in air movement and cooling. Horizontal temperature difference creates a horizontal pressure difference.
- Question 5: Removing air causes surface temperature to drop.
- Question 6: All answers about atmospheric pressure are correct, EXCEPT... [The question needs the options for a complete answer.]
- Question 7: Atmospheric pressure decreases more rapidly in a cold air column.
- Question 8: The most commonly used barometer is a mercury barometer. It's a glass column with mercury and markings.
- Question 9: 15 hPa is equal to 15 mb.
- Question 10: Factors that affect mercury column height in barometers include fluidity, temperature, and force of gravity.
- Question 11: A weather map displays high and low-pressure areas and wind direction.
- Question 12: Rising barometer reading typically indicates good weather, while a falling reading typically indicates cloudy weather.
- Question 13: Surface high-pressure areas are associated with fair weather, and surface low-pressure areas are associated with cloudy weather.
- Question 14: The wind belt on the poleward side of the polar front is the prevailing westerlies.
- Question 15: Air moving eastward more slowly than the Earth's rotation appears to be moving clockwise.
- Question 16: The Coriolis effect deflects air and water currents to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.
- Question 17: [Needs the options to identify the false statement about winds.]
- Question 18: [Need the options to answer the reason behind the wind crossing the isobars.]
- Question 19: Convergence is the piling up of air caused by horizontal inflow.
- Question 20: The downward force of gravity balances the upward pressure gradient force, preventing air from escaping into space.
- Question 21: Winds blow toward low-pressure and away from high-pressure areas.
- Question 22: If highs and lows aloft (at higher altitudes) are directly above highs and lows at the surface, surface weather systems would dissipate.
- Question 23: Air pressure and height are inversely proportional.
- Question 24: If you're facing north and feel the wind from your left, the wind direction is 270°.
- Question 25: Observing object movements or using wind vanes helps determine wind direction.
- Question 26: A windsock or wind vane is a wind instrument used to indicate wind speed and direction. Other options are instruments measuring wind or related phenomena.
- Question 27: [needs options for the equipment].
- Question 28: The prevailing wind in the given wind rose is SE and the least frequent wind is NNE/NE.
- Question 29: The smell of the burger was carried by the wind.
- Question 30: Wind is characterized by its direction, gustiness, and speed, and affects the environment.
- Question 31: [needs options for the net force].
- Question 32: Tightly packed isobars indicate strong pressure gradients and high winds, while widely spaced isobars indicate weak pressure gradients and light winds. Steep pressure gradients cause strong winds, while gentle pressure gradients cause weak winds.
- Question 33: An imbalance between Coriolis force and pressure gradient force leads to gradient wind, cyclonic flow, or anticyclonic flow.
- Question 34: Global winds blow continuously, predictably across long distances.
- Question 35: The initial source of wind energy is solar energy, and it comes from the sun.
- Question 36: Unequal heating of the Earth's surface causes atmospheric convection and global winds.
- Question 37: Chinook winds are warm winds.
- Question 38: Westerlies are also known as the "Roaring Forties."
- Question 39: Loo Winds are hot.
- Question 40: Westerly winds blow from subtropical high-pressure areas to subpolar low-pressure areas.
- Question 41: Westerly winds are stronger and maintain a constant direction in the Northern Hemisphere than their counterpart.
- Question 42: Polar fronts are where cold polar air and warm subtropical air meet, usually associated with storms.
- Question 43: Horse latitudes are associated with belts of subtropical highs.
- Question 44: Jet streams are important elements of westerlies, are in the upper atmosphere, and their paths often aren't straight, involving twists and turns.
- Question 45: Uneven heating between land and water is the primary cause of land and sea breezes.
- Question 46: Land breeze is from land to sea at night.
- Question 47: Sand heats up and cools down faster than water.
- Question 48: Land breeze and sea breeze are due to convection.
- Question 49: Warm air rising above land, replaced by cooler sea air, leads to a land breeze.
- Question 50: The Coriolis force influences wind direction by curving winds to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.
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Description
Test your knowledge on air density, temperature, and pressure with this atmospheric science unit test. Dive into questions about the relationships between altitude, air temperature, and pressure dynamics. Each question challenges your understanding of fundamental atmospheric principles.
