Water Review: Properties, Distribution, Watersheds, River Basins

Water is a universal solvent because it...

• It can be found anywhere
• It freezes when it gets cold
• floats when frozen
• Dissolves most substances

A water molecule has the chemical formula H2O. This means that the water molecule is made up of

• Two hydrogen atoms and one oxygen atom

• Two oxygen atoms and one hydrogen atom

• Two hydrogen atoms and two oxygen atoms

• Two molecules of water

Tags

NGSS.MS-PS1-1

Capillary Action is key for

• Water moving from roots to leaves in plants

• Air moving from mouth to lungs

• Ice floating on water

• Water moving to lower areas

Tags

NGSS.MS-ESS2-4

The tightness across the surface of water that enables paper clips to float is ____________.

• adhesion
• capillary action
• surface tension
• polarity

Cohesive means ........

• the water molecules stick to each other

• the water molecules stick to other surfaces

• the water molecules are less dense

• the water molecules are far apart

Adhesive means ........

• the water molecules stick to each other

• the water molecules stick to other surfaces

• the water molecules are less dense

• the water molecules are far apart

Water can bounce on water because of surface tension.

• True

• False

Most of the water on Earth is unusable by humans because it is _______________.

• contaminated (dirty)
• groundwater
• salt water
• stored in glaciers

Tags

NGSS.MS-ESS2-4

Which represents the amount of potable water on Earth?

• .006%
• 97%
• 2.4%
• .003%

Tags

NGSS.MS-ESS2-4

As you added drops to the coins, each drop stuck to the other water because of ________________.

• adhesion
• cohesion
• capillary action
• specific heat