Earth's Spheres and Their Components

What does the Greek word "Geo" refer to in the context of Earth's spheres?

• Water

• Life

• Ground

• Air

Which of the following is NOT considered part of the Geosphere?

• Inner core

• Crust

• Moisture in the air

• Mantle

What percentage of Earth's surface is covered by water, primarily found in oceans?

• Less than 50%

• Exactly 60%

• Over 70%

• Around 85%

What is the Biosphere primarily known as?

• The layer of gases surrounding Earth

• The zone of life on Earth

• All the water on Earth

• All the rocks and minerals on Earth

Which of these gases is NOT listed as a major component of Earth's atmosphere?

• Nitrogen

• Hydrogen

• Oxygen

• Carbon Dioxide