Atmospheric Circulation Module Overview
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Questions and Answers

What is the definition of wind?

  • Wind is the warming effect caused by moving air from the poles to the equator.
  • Wind is the cooling effect caused by moving air from the equator to the poles.
  • Wind is the movement of air around the planet. (correct)
  • Wind is heat transfer from the poles to the equator.

    • How does wind influence temperature changes on Earth?

  • Wind causes consistent temperatures worldwide.
  • Wind transfers heat between different heat zones, leading to temperature changes. (correct)
  • Wind doesn't affect temperature changes over the ocean.
  • Wind only affects temperature changes over land.
  • Wind has no impact on temperature changes.

    • What is the role of wind when it moves from a tropical zone to a colder zone?

  • It causes cooling in the colder zone.
  • It only affects land temperatures.
  • It has a warming effect in the colder zone. (correct)
  • It does not lead to any temperature changes.

    • How does wind influence temperature changes over the ocean?

    <p>Wind-induced heat transfer influences temperature changes over the ocean.</p> Signup and view all the answers

    What happens when wind moves from a polar zone to a warmer zone?

    <p>It has a cooling effect in the warmer zone.</p> Signup and view all the answers

    How does wind participate in transferring heat between different heat zones?

    <p>By transferring heat, leading to temperature changes in affected regions.</p> Signup and view all the answers

    What is the primary effect of wind-induced heat transfer?

    <p>Influencing temperature changes both on land and over the ocean.</p> Signup and view all the answers

    What is the main consequence of the equatorial low in the Hadley cells?

    <p>Rapid uplift of hot, moist air</p> Signup and view all the answers

    In the Ferrel cells, what is the direction of westerly winds in the Northern Hemisphere?

    <p>South-west</p> Signup and view all the answers

    Where do Polar cells exist geographically?

    <p>Between the poles and 60° N or 60° S</p> Signup and view all the answers

    What is the key role of westerly winds in the formation of Ferrel cells?

    <p>Blow from subtropical high-pressure belts towards subpolar low-pressure belts</p> Signup and view all the answers

    What is a characteristic of subtropical highs formed by Hadley cells?

    <p>High pressure areas characterized by warm and dry conditions</p> Signup and view all the answers

    What happens at 50° and 60° N or 60° S in Polar cells?

    <p>Convergence along polar fronts</p> Signup and view all the answers

    What differentiates Ferrel cells from Hadley cells?

    <p>Direction of airflow towards the poles</p> Signup and view all the answers

    What is the main driver for hot and cold air circulation on Earth?

    <p>Atmospheric pressure</p> Signup and view all the answers

    What is atmospheric temperature?

    <p>The hot/cold conditions of the atmosphere at a specific point or in a given area</p> Signup and view all the answers

    Where do we find the equatorial low-pressure belt?

    <p>At the equator (0°)</p> Signup and view all the answers

    What is another name for the equatorial low-pressure belt?

    <p>Intertropical Convergence Zone (ITCZ)</p> Signup and view all the answers

    How does high temperature impact pressure according to the text?

    <p>It causes air to heat up and rise, resulting in low pressure at the surface</p> Signup and view all the answers

    What is the relation between wind speed and pressure gradient force?

    <p>Steeper gradients result in faster winds</p> Signup and view all the answers

    What happens at the subtropical high pressure belt?

    <p>Air sinks and compresses</p> Signup and view all the answers

    What is formed when cold polar air converges with subsiding warm air at 60° N and 60° S?

    <p>Subpolar low pressure belt</p> Signup and view all the answers

    What is the main factor driving wind movement according to the text?

    <p>Differences in high and low atmospheric pressure</p> Signup and view all the answers

    How does distance between isobars relate to wind speeds?

    <p>Closer isobars indicate faster wind speeds</p> Signup and view all the answers

    Which factor causes air to expand and rise, creating a low-pressure area at the equator?

    <p>Heat</p> Signup and view all the answers

    Why does air sink and compress at subtropical high pressure belts?

    <p>To form a high-pressure system</p> Signup and view all the answers

    Which statement best describes atmospheric pressure?

    <p>Pressure on the Earth's surface due to the weight of the atmosphere</p> Signup and view all the answers

    What is the impact of low temperatures on wind according to the text?

    <p>Causes air to cool down and sink, creating high pressure</p> Signup and view all the answers

    What does a steep gradient between high and low-pressure areas signify?

    <p>Faster winds</p> Signup and view all the answers

    What drives air movement along pressure gradients on Earth?

    <p>Differences in high and low atmospheric pressure</p> Signup and view all the answers

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