Air

The movement of air from high pressure area to low pressure area.

• Smoke

• Rainfall

• Water vapour

• Wind

Orographic rainfall also known as

• Conventional rainfall

• Frontal rainfall

• Relief rainfall

• Cyclonic rainfall

Which layer of atmosphere is free from cloud?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

_________ is used to measure the atmospheric pressure.

• Thermometer

• Barometer

• Centimetre

• Wind vane

How much oxygen is in the air? (%)

• 25%
• 21%
• 68%
• 50%

Clouds form when water vapor ________________ out of the air.

• condenses
• evaporates
• precipitates
• percolates

What is another word for altitude?

• elevation
• barometer
• circumference
• weight

As you climb up a mountain what happens to the air pressure?

• decreases
• increases
• stays the same

Pressure is the effect of

• the weight of all the air above pressing down
• water vapor in the atmosphere
• greenhouse gases
• solar radiation

Which gas creates green house effect in the atmosphere?

• Carbon dioxide

• Ozone

• Oxygen

• None of these