Unit 6 test review

Front

Why are estuaries important?

Back

Estuaries are important because they provide habitats for young marine life, protect coastlines, and are good for fishing.

Front

What is a watershed?

Back

A watershed is an area where water drains to a common outlet, such as a river or lake.

Front

Why is water called a 'polar molecule'?

Back

Water is called a 'polar molecule' because it has slightly charged ends, with one end being slightly positive and the other slightly negative.

Front

How can humans affect water quality?

Back

Humans can affect water quality by using too much fertilizer, littering in water bodies, and releasing industrial waste into water.

Front

In a water molecule, which part has a slight positive charge?

Back

In a water molecule, the hydrogen atoms have a slight positive charge.

Front

What is the role of estuaries in the ecosystem?

Back

Estuaries serve as nurseries for marine life, filter pollutants, and provide a transition zone between land and sea.

Front

Define 'pollution'.

Back

Pollution is the introduction of harmful substances or products into the environment, affecting air, water, and land quality.

Front

What is the water cycle?

Back

The water cycle is the continuous process by which water evaporates, condenses, and precipitates back to the earth.

Front

What are the effects of fertilizer runoff on water bodies?

Back

Fertilizer runoff can lead to nutrient pollution, causing algal blooms that deplete oxygen and harm aquatic life.

Front

What is the significance of clean water?

Back

Clean water is essential for human health, agriculture, and maintaining healthy ecosystems.