Earth and Water Quiz

Why is gaseous water considered lighter?

• Due to more molecules in the same area

• Due to fewer molecules in the same area

• Due to larger molecules

• Due to smaller molecules

Which state of water has molecules that are able to move freely?

• Solid

• Liquid

• Gas

• Plasma

What is the effect of gravity on hot water in a system?

• It causes water to evaporate

• It causes water to freeze

• It causes water to circulate

• It causes water to boil

What is the heat source mentioned in the diagram?

• Solar panels

• Electric heater

• Gas, oil, or solid fuel

• Wind turbine

At what temperature does water reach its maximum density?

• 0°C

• 4°C

• 100°C

• 273K

What happens to water at 0°C?

• It boils

• It reaches maximum density

• It freezes

• It expands by 4%

What is the main topic of the document?

• Water purification

• Properties of water

• Water conservation

• Water pollution

What is the term used when rain picks up impurities and becomes more acidic?

• Hard water

• Acid rain

• Soft rain

• Mineral rain

What is the educational level of the document?

• Level 1 Diploma

• Level 2 Certificate

• Level 3 Degree

• Level 4 Masters

What is a potential effect of alkaline water?

• Corrosion

• Pitting

• Limescale formation

• Neutralization