Water

Which of the following is the reason why ice can float?

• The air bubbles in the frozen water make it rise.
• The water molecules in ice are closer together and more dense than liquid water.
• When water molecules expand, they take up more space and are less dense.
• All frozen things will float in liquid water.

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

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

Tags

NGSS.MS-PS1-1

What percent of Earth's water is the oceans?

• 70%
• 85%
• 90%
• 97%

What percent is Earth's water is found in glaciers?

• 2%
• 10%
• 6%
• 25%

What percent of Earth's water is fresh water?

• 5%
• 3%
• 1%
• 20%

Which of these is a method for conserving fresh water?

• Taking long showers and baths
• Taking short showers and baths
• Leaving the water running while brushing your teeth
• Washing your car with a running hose

Because water has a positive and a negative end, and is attracted to other molecules it is called a ______ molecule.

• mickey mouse
• polar (tiny magnet)
• special
• miracle

Tags

NGSS.MS-PS1-1

The property where water molecules are attracted to other water molecules.

• adhesion
• capillary action
• cohesion
• universal solvent

The property where water molecules are attracted to other types of molecules (surfaces).

• adhesion
• capillary action
• cohesion
• universal solvent

The property where water can dissolve almost all substances on Earth.

• adhesion
• capillary action
• cohesion
• universal solvent