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Chapter 1 Earth-Water Planet
Chapter 1 Earth the Water Planet
29
Science
6th Grade
12/02/2010

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Term
Oceans
Definition
Where most of Earth's water is found. Cover more of the Earth's surface than land.
Term
Solvent
Definition
A substance that dissolves another substance, forming a solution
Term
Capillary Action
Definition
Allows water to soak up a paper towel
Term
Positive Hydrogen ends of one water molecule
Definition
Attract the negative oxygen ends of other water molecules
Term
Why does ice float in water?
Definition
Ice is less dense
Term
Groundwater
Definition
Water that fills the cracks and spaces in underground soil and rock layers
Term
Example of using water for industry
Definition
Making paper
Term
Why do water molecules stick together?
Definition
Because water consists of polar molecules
Term
Solution
Definition
A mixture that forms when one substance dissolves another
Term
Why is water called the Universal Solvent?
Definition
It dissolves so many substances
Term
Surface Tension
Definition
Tightness across the surface of water that is caused by polar molecules pulling on each other
Term
What does water become when it evaporates?
Definition
A gas
Term
Transpiration
Definition
The process by which plants release water into the air
Term
Why can fish live in lakes during winter?
Definition
Ice is less dense than liquid water
Term
The total amount of water on earth
Definition
is fairly constant
Term
Photosynthesis
Definition
The process by which plants use water to make food
Term
Why did many large cities grow up on rivers or coasts?
Definition
People used the water for transportation
Term
What is irrigation used to supply water for?
Definition
Agriculture
Term
What percent of the Earth's water is fresh water?
Definition
3 percent
Term
What is a water molecule made up of?
Definition
Two Hydrogen atoms bonded to an Oxygen atom
Term
Habitat
Definition
A place to live
Term
Specific Heat
Definition
The amount of heat needed to increase the temperature of a certain mass of a substance by 1 degree celcius
Term
Zero Degrees Celsius
Definition
Temperature that liquid water changes into a solid state
Term
The sun
Definition
Where the energy for the water cycle originally comes from
Term
Evaporation
Definition
When water changes from a liquid to a gas
Term
Precipitation
Definition
Water returns to the Earth's surface from the atmosphere in the form of a liquid
Term
Condensation
Definition
When water changes from a gas to a liquid
Term
Ice
Definition
The form that most of Earth's water is found
Term
3 %
Definition
Earth's total amount of Fresh water
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