Earth and Water Quiz

Approximately what percentage of Earth's surface is covered by water?

• 50%

• 60%

• 70%

• 80%

What are the properties of water in its purest form?

• Colorless, odorless, and tasteless

• Colored, fragrant, and sweet

• Bitter, salty, and spicy

• Thick, sticky, and sour

What causes the taste in water?

• The minerals dissolved in it

• The temperature of the water

• The color of the water

• The container it is stored in

Which of the following is the solid state of water?

• Steam

• Ice

• Liquid

• Vapor

By what percentage does water expand when it freezes?

• 5%

• 10%

• 15%

• 20%

What happens to the molecules of water when it turns into steam at boiling point?

• They become closer together

• They remain the same distance apart

• They move a long way apart and move around easily

• They form a solid structure

In convection, which parts of the liquid move downwards?

• Warmer/lighter parts

• Colder/heavier parts

• All parts move equally

• Only the surface

What is the movement of warmer/lighter parts in a liquid called?

• Conduction

• Radiation

• Convection

• Diffusion

What happens to water around a heat source?

• It cools down evenly.

• It heats evenly.

• It heats unevenly.

• It remains at a constant temperature.

What happens to warmer water when the heat source is lower?

• It sinks to the bottom.

• It rises through cooler water.

• It stays at the same level.

• It evaporates.