Water

What percent of Earth is covered by water and ice?

• 85%
• 90%
• 75%
• 97%

What are the three states of water found on Earth?

• solid, liquid & gas
• oceans, lakes & streams
• evaporation, transpiration
• rain, sleet & hail

Water is made up of these two colorless, odorless gases.

• Helium and Oxygen
• Oxygen and Carbon Dioxide
• Hydrogen and Helium
• Hydrogen and Oxygen

What percent of Earth's water is fresh water?

• 5%
• 3%
• 1%
• 20%

Water pollution occurs when:

• Harmful substances enter a water supply

• Industries dispose of waste safely and correctly.

• Industries cut costs with waste disposal.

• None of the above.

We can prevent water pollution by:

• Reduce the use of plastic.

• Properly dispose of chemicals.

• Clean up after your animals.

• All of the above

A high specific heat means...

• It heats up quickly with energy added
• It requires more energy to change temperature

Tags

NGSS.MS-PS1-4

The temperature at which a substance changes from liquid to gas (for water this is 100 degrees Celsius, 212 degrees Fahrenheit)

• boiling point

• melting point

• evaporation

• condensation

What is water's freezing point?

• 0 F
• 32 C
• 50 C
• 0 C

What is the chemical formula for water?

• H20
• h₂o
• H₂O₂
• H₂O