U2L1 - Water and Its Properties Pretest

Front

What is cohesion in relation to water?

Back

Cohesion is the property of water that allows it to stick to itself, resulting in phenomena like water forming droplets.

Front

How does access to clean water impact human health?

Back

Lack of access to clean water can lead to health issues, particularly in developing nations.

Front

Why does ice float in water?

Back

Ice floats in water because it is less dense than liquid water.

Front

What happens to the shape of liquid water and water vapor?

Back

Liquid water takes the shape of its container, while water vapor expands to fill the available space.

Front

What percentage of Earth's water is salt water?

Back

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

Front

What is the difference between fresh water and salt water?

Back

Fresh water has a low concentration of salt, while salt water has a high concentration of salt.

Front

What is the process of evaporation?

Back

Evaporation is the process by which water changes from a liquid to a gas.

Front

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

Back

Water's high specific heat allows it to absorb and retain heat, helping to regulate temperature in the environment.

Front

What is surface tension in water?

Back

Surface tension is the cohesive force at the surface of water that makes it behave like a stretched elastic membrane.

Front

What is the role of water in biological systems?

Back

Water is essential for life, serving as a solvent, a medium for chemical reactions, and a means of transport for nutrients.