Social science

What is the composition of the Earth’s atmosphere primarily made up of?

• Oxygen

• Nitrogen

• Carbon dioxide

which layer of atmosphere is closest to the Earth surface?

• Troposphere

• Stratosphere

• Mesosphere

What is the main function of the ozone layer in the atmosphere?

• To trap carbon dioxide

• To protect against UV radiation

• To produce oxygen

What is wind?

• The movement of air from high to low pressure areas

• The movement of clouds in the sky

• The rotation of the Earth ‘s answer the movement of air the movement of air

Which direction do the trade winds blow in the Northern Hemisphere ?

• East to west

• West to East

• North to South

What is air pressure?

• The weight of the air above us

• The temperature of the air

• The speed of the wind

What causes the formation of clouds in the atmosphere?

• Pollution

• Evaporation

• Condensation

What is humidity?

• the measure of how hot the air is

• The measure of moisture in the air

• The measure of air pressure

Which gas do plants absorb from the atmosphere during photosynthesis?

• Oxygen

• Carbon dioxide

• Nitrogen

What is the process by which water vapour changes into water droplets or ice crystals in the atmosphere?

• Evaporation

• Condensation

• Precipitation