The video introduces Earth's spheres, including the hydrosphere, biosphere, geosphere, and atmosphere. It explains each sphere's components and significance, using a KWL chart to guide learning. The hydrosphere includes all water on Earth, the biosphere encompasses all life, the geosphere consists of Earth's solid parts, and the atmosphere contains the gases surrounding Earth. The video concludes with a review of key definitions.

What does the 'K' in the KWL chart stand for?

• Kindness

• Knowledge

• Kaleidoscope

• Kinetics

Which of the following is NOT one of Earth's spheres?

• Geosphere

• Astrosphere

• Biosphere

• Hydrosphere

What is the primary component of the hydrosphere?

• Rocks

• Soil

• Water

• Air

What is the significance of the water cycle in the hydrosphere?

• It supports life by providing oxygen

• It shapes landforms and influences climate

• It creates new rocks

• It generates electricity

Which Greek word is the root for 'bio' in biosphere?

• Water

• Air

• Life

• Earth

What does the geosphere primarily consist of?

• Water bodies

• Living organisms

• Gases

• Rocks and soil

Which sphere includes all living organisms?

• Atmosphere

• Geosphere

• Biosphere

• Hydrosphere

What percentage of Earth's atmosphere is nitrogen?

• 50%

• 1%

• 78%

• 21%

What is the main function of Earth's atmosphere?

• To store water

• To provide a habitat for life

• To generate electricity

• To support rocks

Which sphere is responsible for weather patterns?

• Hydrosphere

• Biosphere

• Geosphere

• Atmosphere