plumbing science pp2

What percentage of Earth's surface is covered by water according to the "Properties of Water" section in the plumbing studies material?

• 50%

• 60%

• 70%

• 80%

What is the nature of water in its purest form as used in modern properties for plumbing systems?

• Colorful and odorous

• Colorless and odorless

• Colorless and flavorful

• Colorful and tasteless

Where does the taste of water typically come from?

• Artificial additives

• Plumbing materials

• Minerals dissolved in it

• Water treatment chemicals

What are the three states of matter that water can exist in ?

• Solid, Liquid, Gas

• Solid, Vapor, Ice

• Ice, Water, Cloud

• Liquid, Air, Crystal

What is the freezing point of pure water at sea level?

• 0°C

• 100°C

• 50°C

• -10°C

What happens to water when it freezes?

• It contracts by 10%

• It expands by 10%

• It remains unchanged

• It evaporates

What is the consequence of water expanding when it freezes inside pipes?

• The pipes become stronger

• The pipes contract

• The pipes burst

• The pipes become more flexible

At what temperature does water reach its maximum density ?

• 0°C

• 4°C

• 100°C

• 10°C

What happens to water molecules as the temperature rises above 0°C?

• They get closer and freeze.

• They stop moving.

• They move further apart and become liquid.

• They evaporate immediately.

At what temperature does water reach its boiling point, causing a significant expansion hazard?

• 100°C

• 90°C

• 120°C

• 80°C