ELSS KI1 The Importance of Water and the Global Water Cycle

Front

What is the Goldilocks zone?

Back

The Goldilocks zone is the distance from the Sun where Earth is 'just right' for water to exist in its liquid form, allowing for a habitable temperature and environmental regulation.

Front

How do clouds affect Earth's temperature?

Back

Clouds, made up of tiny water droplets and ice crystals, reflect around a fifth of incoming solar radiation, lowering surface temperatures.

Front

Why do plants need water?

Back

Plants need water for photosynthesis, respiration, and transpiration. Photosynthesis involves combining CO2, sunlight, and water to make glucose and starches.

Front

How does water support human life?

Back

Water supports human life through processes like sweating for cooling, generating electricity, irrigating crops, and satisfying public demand for drinking water and sewage disposal.

Front

How do animals use water for cooling?

Back

In fur-covered mammals, reptiles, and birds, evaporative cooling is achieved by panting.

Front

What role does water play in climate regulation?

Back

Water helps create benign thermal conditions on Earth by moderating temperatures, absorbing heat, and releasing it slowly. Water vapor also absorbs long wave radiation, maintaining global temperatures.

Front

Define lithosphere.

Back

The lithosphere is the rigid outer part of the Earth, consisting of the crust and upper mantle, divided into tectonic plates.

Front

Define biosphere.

Back

The biosphere is the space at Earth's surface and within the atmosphere occupied by living organisms.

Front

Define cryosphere.

Back

The cryosphere is the frozen part of Earth's surface, including polar ice caps, continental ice sheets, glaciers, sea ice, and permafrost.

Front

Define atmosphere.

Back

The atmosphere is the envelope of gases surrounding the planet.