Liquids and Water
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| Five uses of water | 1) Agriculture 2) Industry 3) Transportation 4) Recreation 5) Household Purposes
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| Photosynthesis | The process by which plants use water, plus carbon dioxide and energy from the sun to make food.
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| What percentage of Earth's water is fresh water | 3%
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| The majority of Earth's fresh water is found in? | Ice in the North and South Pole
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| 2 Elements that make up water | 1) Hydrogen and 2) Oxygen
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| Hydrogen has what kind of electrical charge? | Positive
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| Why is water known as the "universal solvent"? | Because Water is able to dissolve many things.
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| 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.
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| Why is water able to move upwards, against gravity? | Capillary Action
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| Evaporation | When water changes to the gaseous state.
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| 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.
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| Cohesion | Causes water molecules to be attracted to other water molecules.
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| Adhesion | Causes water molecules to be attracted to other objects.
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| 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.
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| 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.
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| What makes up a water molecule? | 2 positive hydrogen and 1 negative oxygen.
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| Solvent | A substance that dissolves another substance forming a solution. Ex: water.
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| Solute | The substance that is being dissolved. Ex: crystal light.
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| Solution | A mixture that forms when one substance dissolves in another. Ex: crystal light
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| Irrigation | The process of supplying land areas with water to make them suitable for farming.
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| More than 97% of Earth's total water supply is found in? | Oceans (salt water)
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| When you stir salt into water, you are making a ? | Solution
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| The energy that drives the water cycle comes from the ? | Sun
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| Photosynthesis | The process in which plants use water, light and carbon dioxide to make food.
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| Most of the Earth's fresh water is found in the form of ______________________. | Ice
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| The property of surface tension allows some insects to ________________________ on water. | Float
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| Transportation | The process by which leaves of plants give off water into the atmosphere.
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| Cohesion | What attracts water molecules to other water molecules.
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| Why is so little of Earth's water available for human use? | It is ice...
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| As ice cube melts,water molecules move ________________________. | Faster.
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Created by:
catrin013