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 Water 40 Flashcards |
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What percentage of the Earth's surface is covered by water? |
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70% |
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Which of the following is a source of freshwater? A) Oceans B) Rivers C) Seas D) Lakes |
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B) Rivers |
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Riddle: I can be found as vapor, liquid, or solid, and I cover most of the Earth. What am I? |
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Water |
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True or False: Groundwater is always dirty and not suitable for drinking. |
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False. Groundwater is very pure because it passes through layers of sand, rocks, and soil. |
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Water is in the solid state at temperatures of ______ degrees Celsius or less. |
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0 |
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What is the term for the process by which water vapor cools and forms clouds? |
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Condensation |
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Which type of solution cannot dissolve any more solute at a particular temperature? |
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Saturated solution |
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Fill in the blank: The maximum density of water occurs at ______ degrees Celsius. |
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4 |
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What is the latent heat of vaporization for water in joules per kilogram? |
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2.3 × 10⁶ joule kg⁻¹ |
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True or False: Ice sinks in water because it is denser than liquid water. |
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False. Ice floats because it is less dense than liquid water. |
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Riddle: I am a process that helps purify water by letting heavier particles settle at the bottom. What am I? |
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Sedimentation |
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What is the process of adding chlorine to water to kill harmful bacteria called? |
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Chlorination |
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Fill in the blank: Water that is safe for drinking is called ______. |
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Potable water |
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What is the name of the phenomenon when water expands upon freezing? |
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Anomalous expansion of water |
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Which of the following is NOT a waterborne disease? A) Cholera B) Typhoid C) Diabetes D) Jaundice |
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C) Diabetes |
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True or False: Water pollution can occur from agricultural runoff. |
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True. |
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What is the first step in the water purification process in treatment plants? |
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Sedimentation |
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Riddle: I can hold heat and cool you down, yet I'm essential for life and come from the sky. What am I? |
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Water |
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What happens to the solubility of most solids when water temperature increases? |
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It increases. |
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Fill in the blank: A solution that contains more solute than can normally dissolve is called a ______ solution. |
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Supersaturated |
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Completed! Keep practicing to master all of them. |
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