Earth's Components and Their Functions

The video explores Earth's components: atmosphere, hydrosphere, lithosphere, and biosphere. The atmosphere is a mix of gases protecting life and maintaining temperature. The hydrosphere covers 71% of Earth's surface, with most water in oceans. The lithosphere is the land, including rocks and minerals. The biosphere encompasses all living organisms, thriving due to Earth's optimal conditions.

Which of the following is NOT one of the main components of Earth discussed in the video?

• Atmosphere

• Lithosphere

• Hydrosphere

• Astrosphere

What percentage of Earth's atmosphere is made up of nitrogen?

• 0.03%

• 97%

• 78%

• 21%

What role does Earth's atmosphere play in relation to the Sun?

• It absorbs all sunlight.

• It reflects sunlight away from Earth.

• It acts as a shield against harmful rays.

• It increases the Sun's radiation.

What percentage of Earth's surface is covered by water?

• 97%

• 21%

• 71%

• 3%

Where is the majority of Earth's water found?

• Lakes

• Rivers

• Glaciers

• Oceans

What does the term 'lithosphere' refer to?

• The living organisms on Earth

• The land component of Earth

• The gaseous layer surrounding Earth

• The water component of Earth

What percentage of Earth's total surface area is made up of the lithosphere?

• 21%

• 71%

• 97%

• 3%

Which component of Earth includes all living organisms?

• Lithosphere

• Atmosphere

• Hydrosphere

• Biosphere

Why is life possible on Earth according to the video?

• Due to the distance from the Moon

• Because of the abundance of water

• Due to the balance between lithosphere, atmosphere, and hydrosphere

• Because of the presence of only the atmosphere