C1b : Atmosphere

What is the main force that holds most of the atmosphere close to the earth?

• Electromagnetic Force

• Frictional Force

• Gravitational Force

• Nuclear Force

Which gas protects the Earth from harmful UV radiation?

• Ozone

• Nitrogen

• Carbon Dioxide

• Oxygen

What is the boundary between the troposphere and the stratosphere called?

• Stratopause

• Tropopause

• Thermopause

• Mesopause

Which layer of the atmosphere contains most of the ozone that blocks harmful UV radiation?

• Thermosphere

• Troposphere

• Mesosphere

• Stratosphere

What is the coldest part of the atmosphere?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

Which layer of the atmosphere is known for the presence of the Northern and Southern lights?

• Mesosphere

• Thermosphere

• Stratosphere

• Troposphere

What is the outermost layer of the Earth's atmosphere called?

• Exosphere

• Thermosphere

• Mesosphere

• Stratosphere

What is the layer of the atmosphere where most weather phenomena occur?

• Stratosphere

• Troposphere

• Mesosphere

• Thermosphere

Which gas is the most abundant in the Earth's atmosphere?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Argon