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. (B)</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. (B)</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. (D)</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. (D)</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 (D)</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 (B)</p> Signup and view all the answers

Where do Polar cells exist geographically?

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

What differentiates Ferrel cells from Hadley cells?

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

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

<p>Atmospheric pressure (D)</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 (B)</p> Signup and view all the answers

Where do we find the equatorial low-pressure belt?

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

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

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

What happens at the subtropical high pressure belt?

<p>Air sinks and compresses (A)</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 (D)</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 (D)</p> Signup and view all the answers

How does distance between isobars relate to wind speeds?

<p>Closer isobars indicate faster wind speeds (D)</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 (A)</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 (C)</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 (C)</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 (A)</p> Signup and view all the answers

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

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

What drives air movement along pressure gradients on Earth?

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

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