1st Semester Exam

Front

What is Bill Nye known as?

Back

Science guy.

Front

What percentage of Earth's freshwater is available for human consumption?

Back

.0025%.

Front

Is all clear water considered clean water?

Back

False.

Front

What is an aquifer?

Back

A body of water that is found underground.

Front

What is the most important property of water?

Back

Polarity.

Front

Define cohesion in the context of water.

Back

Cohesion is the attraction between molecules of the same substance, which in water leads to surface tension.

Front

Define adhesion in the context of water.

Back

Adhesion is the attraction between molecules of different substances, which allows water to stick to other materials.

Front

What is surface tension?

Back

Surface tension is the elastic tendency of a fluid surface that makes it acquire the least surface area possible.

Front

What is the significance of water's polarity?

Back

Polarity allows water to dissolve many substances, making it a universal solvent.

Front

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

Back

Renewable resources can be replenished naturally, while non-renewable resources are finite and cannot be replaced.