Earth's Atmosphere and Related Concepts

The layer of Earth's atmosphere that contains the ozone layer is:

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

The primary function of the ozone layer is to:

• absorb ultraviolet radiation from the sun

• trap heat in the Earth's atmosphere

• reflect sunlight back into space

• produce oxygen for the Earth

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

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

Which gas is a major component of greenhouse gases?

• Carbon Dioxide

• Oxygen

• Nitrogen

• Hydrogen

The main characteristic of the mesosphere is:

• It is the hottest layer of the atmosphere.

• It is where most meteors burn up.

• It contains the ozone layer.

• It is the closest layer to Earth.

The atmospheric layer known for containing the auroras is:

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

What human activity is a major source of carbon dioxide emissions?

• Burning fossil fuels

• Deforestation

• Agriculture

• Industrial processes

The primary cause of global wind patterns on Earth is:

• the rotation of the Earth

• the gravitational pull of the moon

• the Earth's magnetic field

• the presence of large bodies of water

Which statement best describes how the Sun heats Earth's surface?

• The Sun heats Earth's surface through direct contact.

• The Sun heats Earth's surface by emitting light and heat energy.

• The Sun heats Earth's surface by reflecting off the moon.

• The Sun heats Earth's surface by warming the air around it.

What happens to air when it is heated?

• It contracts

• It expands

• It remains the same

• It cools down