This video tutorial explores the Earth's system, focusing on its five spheres: geosphere, biosphere, atmosphere, hydrosphere, and cryosphere. Each sphere is described in detail, highlighting their unique characteristics and roles in the Earth's ecosystem. The geosphere encompasses the Earth's physical features, the biosphere includes all living organisms, the atmosphere is the gaseous envelope surrounding Earth, the hydrosphere covers all water bodies, and the cryosphere consists of frozen water parts. The video emphasizes the interconnectedness of these spheres and their impact on the planet.

Which sphere was recently added to the traditional four spheres of Earth?

• Geosphere

• Biosphere

• Cryosphere

• Atmosphere

What does the geosphere include?

• The collective mass of water on Earth

• The envelope of gas surrounding Earth

• All physical features of the planet except water

• All living organisms

What shape is the Earth according to Sir Isaac Newton's prediction?

• Cube

• Oblate spheroid

• Flat disc

• Perfect sphere

What is the biosphere composed of?

• Only plants

• Only animals

• All living organisms and dead organic matter

• Only fungi

How many primary layers does the atmosphere have?

• Three

• Four

• Five

• Six

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

• Stratosphere

• Exosphere

• Mesosphere

• Troposphere

What percentage of Earth's surface is covered by the hydrosphere?

• 70%

• 60%

• 50%

• 80%

Tags

NGSS.MS-ESS2-4

What is the main difference between warm and cold water in the hydrosphere?

• Warm water is denser and sinks

• Cold water is less dense and rises

• Warm water is less dense and rises

• Cold water is lighter and floats

What forms the cryosphere?

• Liquid water

• None of the above

• Gaseous water

• Frozen water

Which of the following is NOT part of the cryosphere?

• Sea ice

• Valley glaciers

• Deserts

• Continental ice sheets