U2L1 - Water and Its Properties Pretest

Front

What is the relationship between access to clean water and human health in developing nations?

Back

Many developing nations lack access to clean water; this can harm human health.

Front

What property of water allows it to form droplets on surfaces?

Back

Cohesion.

Front

Why is Earth's water vapor not found only in low places like liquid water?

Back

Unlike liquid water, water vapor expands to fill available space.

Front

What is the approximate proportion of fresh water to salt water on Earth?

Back

Fresh water makes up about 2.5% of Earth's water, while salt water makes up about 97.5%.

Front

What is the composition of a water molecule?

Back

A water molecule contains two hydrogen atoms and one oxygen atom.

Front

What charge does the oxygen atom in a water molecule have?

Back

The oxygen atom is negatively charged.

Front

What charge do the hydrogen atoms in a water molecule have?

Back

The hydrogen atoms are positively charged.

Front

What is cohesion in relation to water?

Back

Cohesion is the property of water that causes water molecules to stick to each other.

Front

What is adhesion in relation to water?

Back

Adhesion is the property of water that causes water molecules to stick to other substances.

Front

What is the significance of water's high specific heat?

Back

Water's high specific heat allows it to absorb and release heat without significant temperature changes, helping to regulate climate.