Layers of the Atmosphere

What is the main component of the Earth's atmosphere?

• Nitrogen

• Oxygen

• Carbon Dioxide

• Hydrogen

Which layer of the atmosphere is closest to the Earth's surface?

• Stratosphere

• Mesosphere

• Troposphere

• Exosphere

What phenomenon occurs in the mesosphere?

• Ozone layer formation

• Meteors burning up

• Auroras

• Weather events

What is the temperature trend in the troposphere as altitude increases?

• It stays the same

• It decreases

• It increases

• It fluctuates

What is the ozone layer primarily responsible for?

• Creating weather

• Protecting from UV radiation

• Regulating temperature

• Supporting life

What is the main characteristic of the thermosphere?

• Presence of weather

• High density of gases

• Low atmospheric pressure

• Individual gas molecules

What happens to ash and gas from a volcanic eruption in the stratosphere?

• It creates weather patterns

• It mixes with the troposphere

• It remains suspended for years

• It falls back to Earth

What is the primary source of heat for the troposphere?

• The Sun

• Earth's core

• The Moon

• Volcanic activity

What are the Van Allen radiation belts made of?

• Dust particles

• Water vapor

• Charged particles

• Ozone

What does the term 'strato-' mean?

• Changing

• Layer

• Heat

• Air