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Science

Liquids and Water

QuestionAnswer
Five uses of water 1) Agriculture 2) Industry 3) Transportation 4) Recreation 5) Household Purposes
Photosynthesis The process by which plants use water, plus carbon dioxide and energy from the sun to make food.
What percentage of Earth's water is fresh water 3%
The majority of Earth's fresh water is found in? Ice in the North and South Pole
2 Elements that make up water 1) Hydrogen and 2) Oxygen
Hydrogen has what kind of electrical charge? Positive
Why is water known as the "universal solvent"? Because Water is able to dissolve many things.
A water glider (bug) is able to "float" on water because of? Surface Tension, which is the tightness across the surface of water that is caused by the polar molecules pulling on each other.
Why is water able to move upwards, against gravity? Capillary Action
Evaporation When water changes to the gaseous state.
Condensation Is when you have a cold glass of ice water outside on a hot summer day and beads of water collect on the oustide of the cup.
Cohesion Causes water molecules to be attracted to other water molecules.
Adhesion Causes water molecules to be attracted to other objects.
Why can ice float on water? Because frozen water in an ice cube tray contains the same amount of matter as when it was a liquid.
The process of how water moves from a solid, to a liquid to a gas: To turn into a solid it needs to frrize and the molecules move slow. To turn into a liquid the substance needs to melt and the molecules move at a medium speed, and to turn into a gas evaporation occurs and the molecules move fastly.
What makes up a water molecule? 2 positive hydrogen and 1 negative oxygen.
Solvent A substance that dissolves another substance forming a solution. Ex: water.
Solute The substance that is being dissolved. Ex: crystal light.
Solution A mixture that forms when one substance dissolves in another. Ex: crystal light
Irrigation The process of supplying land areas with water to make them suitable for farming.
More than 97% of Earth's total water supply is found in? Oceans (salt water)
When you stir salt into water, you are making a ? Solution
The energy that drives the water cycle comes from the ? Sun
Photosynthesis The process in which plants use water, light and carbon dioxide to make food.
Most of the Earth's fresh water is found in the form of ______________________. Ice
The property of surface tension allows some insects to ________________________ on water. Float
Transportation The process by which leaves of plants give off water into the atmosphere.
Cohesion What attracts water molecules to other water molecules.
Why is so little of Earth's water available for human use? It is ice...
As ice cube melts,water molecules move ________________________. Faster.
Created by: catrin013
 

 



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