Science Reading Earth 3

Front

What does the term 'finite' mean in the context of natural resources?

Back

It refers to a limited amount of a resource that is not infinite.

Front

What percentage of the Earth's water is salt water?

Back

97% of the Earth's water is salt water.

Front

What is the primary source of fresh water on Earth?

Back

The primary source of fresh water is glaciers and ice caps.

Front

What is the water cycle?

Back

The water cycle is the continuous process by which water moves from the Earth's surface to the atmosphere and back, including processes like evaporation, condensation, and precipitation.

Front

Why is it important to conserve water?

Back

Conserving water is crucial because it is a finite resource, and excessive use can lead to shortages and environmental degradation.

Front

What are the main uses of water in human activities?

Back

Water is used for drinking, agriculture, sanitation, industry, and energy production.

Front

What is the difference between renewable and non-renewable resources?

Back

Renewable resources can be replenished naturally over time, while non-renewable resources exist in finite amounts and cannot be replaced once depleted.

Front

How does pollution affect water quality?

Back

Pollution can introduce harmful substances into water bodies, making it unsafe for drinking, harming aquatic life, and disrupting ecosystems.

Front

What role do wetlands play in the environment?

Back

Wetlands act as natural water filters, provide habitat for wildlife, and help in flood control.

Front

What is groundwater, and why is it important?

Back

Groundwater is water that is stored underground in aquifers; it is a crucial source of drinking water and irrigation.