Ch 13 Earth as a System: Energy, Matter, and Life | Class 9 Science - Educart

How does the cool mountain breeze benefit agriculture activity, particularly the crops and soil?

What happens to the warm surface of water from the equator as it travels toward the poles?

Which of the following is primarily responsible for warming of the Earth?

MCQ (Multiple Choice)

Choose the most appropriate option to describe the role of biogeochemical cycles in an ecosystem.

MCQ (Multiple Choice)

What would happen to plants and animals on Earth if the biogeochemical cycles were disrupted and stopped?

The CO₂ dissolved in the ocean is disturbed when the global temperature increases.

Discuss how human activities increase the concentration of greenhouse gases in the atmosphere.

Explain how climate change affects the water cycle.

How are mountain and valley breezes formed?

You have witnessed weather phenomena, such as winds, storms, rainfall, etc.

Describe how albedo affects the Earth's surface temperature and its climate.

Explain the processes involved in the nitrogen cycle.

What are the impacts of deforestation on the Earth's oxygen and carbon cycles?

Why is an excess of CO₂ in the atmosphere considered undesirable even though it is required by plants?

Explain with suitable diagram the path that carbon takes to go back to the atmosphere.

If the Earth were a flat disc instead of a sphere, how would the patterns of solar radiation and temperature be different?

How is heat lost from the surface of the Earth?

Suppose there is a rise in atmospheric temperature on Earth.

Explain how the Earth's atmosphere helps in maintaining a suitable temperature for life to survive on the Earth.

Describe the interrelationship between different spheres of the Earth.

How does the warming of Arabian Sea water affect the south west monsoon in India?

What if photosynthes is stopped, what would happen on the Earth?

If a large forest is cleared, how can that affect the flow of a river in that area?

How would increasing carbon dioxide levels in the atmosphere affect the ocean plankton?

What might happen to coastal cities in India if glaciers and polar ice keep melting faster?