Science Kids: Earth's Materials and Systems

The video tutorial explores Earth's four interconnected systems: the geosphere, biosphere, hydrosphere, and atmosphere. It explains each system's components and functions, such as the geosphere's rocks and minerals, the biosphere's living organisms, the hydrosphere's water forms, and the atmosphere's layers. The tutorial also discusses how these systems interact, affecting each other through processes like weathering, erosion, and human activities like deforestation.

Who are the scientists that focus on studying the Earth?

• Geoscientists

• Astronomers

• Archeologists

• Biologists

Which of the following is a component of the geosphere?

• Soil

• Air

• Water

• Plants

What is the term for regions with similar climate, plants, and animals?

• Terrains

• Habitats

• Biomes

• Ecosystems

How long has the Earth's biosphere existed?

• Nearly 1 billion years

• About 3.5 billion years

• Less than 1 million years

• About 10 million years

What percentage of Earth is covered by water?

• 70%

• 90%

• 50%

• 20%

What do we call freshwater beneath the Earth's surface?

• Springs

• Rivers

• Lakes

• Groundwater

Which layer of the atmosphere contains the air we breathe?

• Troposphere

• Mesosphere

• Thermosphere

• Exosphere

Which layer of the atmosphere protects us from the sun's harmful rays?

• Troposphere

• Stratosphere

• Exosphere

• Mesosphere

What is the process called when wind and water wear away rock surfaces?

• Weathering

• Sedimentation

• Erosion

• Oxidation

What is a common cause of chemical weathering?

• Drought

• Acid rain

• Gravity

• Sunlight