How are temperature and volume related?
Temperature and volume are directly related. When temperature increases, molecules move more vigorously, the distance between them increases, the substance expands, volume increases.
How are pressure and volume related?
Pressure and volume are inversely related. When pressure increases, volume decreases.
What does higher pressure mean: more distance between molecules, less distance between molecules?
Higher pressure between less distance between molecules.
More distance between molecules indicates lower pressure.
How are temperature and pressure related?
When temperature rises, molecules move away from each other. It means the pressure is decreasing.
Therefore, temperature and pressure are inversely related.
What is the pattern of temperature on Earth?
On Earth, the temperature is highest around the Equator and lowest around the Poles.
From this, we can say atmospheric pressure is highest around the Poles and lowest around the Equator.
Pressure Belts on Earth
Equator: Low pressure
Tropics: Higher than Equator
Arctic and Antarctic Circles: Lower than Poles
Poles: High pressure
Equatorial Low Pressure Belt
Tropical High Pressure Belt
Sub-Polar Low Pressure Belt
Polar High Pressure Belt
What is the direction of wind: from high pressure to low pressure, or, low pressure to high pressure?
Wind always moves from high pressure to low pressure.
Direction of winds on Earth
1. From tropics towards Equator
2. From tropics to Sub-Polar regions
3. From Poles to Sub-Polar regions
How are winds on Earth deflected?
Winds are deflected to right in the Northern Hemisphere and to left in the Southern Hemisphere.
Why are winds are deflected?
Winds are deflected due to the rotation of Earth from west to east. The rotation of Earth creates a force which pushes the winds. This force is called Coriolis Force.
How is a wind named?
A wind is named after the direction from which it originates.
What are the types of winds on Earth?
1. Easterlies from tropics to Equator
(Easterlies are called Trade Winds.)
2. Westerlies from tropics to Sub-Polar regions
3. Polar Winds from Poles to Sub-Polar regions
(Polar Winds are also Easterlies.)
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