Quiz on Earth's Atmosphere

What is the lowest layer of the atmosphere?

• Stratosphere

• Thermosphere

• Troposphere

• Mesosphere

Which gas is essential for photosynthesis?

• Carbon Dioxide

• Nitrogen

• Methane

• Oxygen

What phenomenon keeps the planet warm enough for living organisms?

• Nitrogen fixation

• Greenhouse effect

• Ozone layer

• Solar wind

How high does the troposphere extend?

• 50 kilometers

• 15 kilometers

• 600 kilometers

• 85 kilometers

What happens to temperature in the stratosphere as altitude increases?

• It fluctuates

• It stays the same

• It decreases

• It increases

Which layer of the atmosphere contains a high concentration of iron?

• Mesosphere

• Stratosphere

• Thermosphere

• Troposphere

What is the main function of the ozone layer?

• Create weather patterns

• Provide oxygen

• Absorb ultraviolet radiation

• Absorb infrared radiation

What is nitrogen fixation?

• Destruction of nitrogen compounds

• Release of nitrogen into the atmosphere

• Absorption of nitrogen by plants

• Conversion of nitrogen into ammonia

What is the uppermost layer of the atmosphere?

• Thermosphere

• Mesosphere

• Stratosphere

• Troposphere

What is the temperature in the thermosphere capable of reaching?

• 15 °C

• 1727 °C

• 50 °C

• 727 °C