Greenhouse Gases and Atmospheric Changes

What were the primary gases in Earth's atmosphere shortly after its formation?

• Oxygen and Nitrogen

• Carbon dioxide and Water vapor

• Hydrogen and Helium

• Methane and Argon

As Earth cooled and its crust formed, what two main gases were released into the atmosphere by volcanoes?

• Oxygen and Nitrogen

• Hydrogen and Helium

• Methane and Neon

• Carbon dioxide and Water vapor

How did Earth's oceans primarily form?

• From melting glaciers

• Water vapor in the atmosphere condensed and fell as rain

• Through volcanic eruptions

• From comets impacting Earth

What gas did early plants release into the atmosphere through photosynthesis, which was crucial for the development of more complex life?

• Carbon dioxide

• Nitrogen

• Oxygen

• Methane

Which gas makes up the largest percentage of Earth's current atmosphere?

• Oxygen

• Carbon dioxide

• Argon

• Nitrogen

What is the main role of greenhouse gases in Earth's atmosphere?

• To reflect all sunlight back into space.

• To absorb and re-emit infrared radiation, warming the Earth.

• To produce oxygen for living organisms.

• To create clouds and precipitation.

By what percentage has the amount of carbon dioxide in the atmosphere increased since the Industrial Revolution?

• 10%

• 25%

• 45%

• 78%

Which two gases, when released into the atmosphere and dissolved in rain, contribute to acid rain?

• Oxygen and Nitrogen

• Carbon dioxide and Methane

• Sulfur dioxide and Nitrogen oxides

• Helium and Argon

What is a direct consequence of removing large areas of forest?

• Increased oxygen in the atmosphere.

• Less carbon dioxide being removed from the atmosphere.

• A decrease in global temperatures.

• More sunlight reaching the ground.

What happens to the ocean when carbon dioxide dissolves in it?

• It becomes more alkaline.

• It becomes warmer.

• It becomes more acidic.

• It becomes clearer.