Science practice Quiz
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Water that falls to earth as rain, sleet, hail and snow is called
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precipitation
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_____________ is when water evaporates through tiny openings in leaves on trees and plants
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transpiration
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Water can dissolve many different substances which explains why it is referred to as a
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universal solvent
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_____________ is the attraction of water molecules to each other
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cohesion
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Water traveling through small spaces in rocks and soil is
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capillary action
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______________ is the continuous process by which water moves from earths surface to the atmosphere and back
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water cycle
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Clouds are formed because of
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condensation
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______________ explains why water can stick to other substances or material
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adhension
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Explain why adhesion and cohesion are important for capillary action to take place
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It is important because adhesion travels and cohesion keeps water together
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What in nature can you see examples of surface tension?
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An example of surface tension is a boat floating on the top of the water
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Explain what happens during the process of evaporation
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The process of evaporation is when the sun heats up the water molecules and they move into the clouds
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Define surface tension in your own words
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Surface tension is a skin like layer made by molecules on the top of water that allow things to float
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During precipitation in the form of rain, water
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liquid
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The water molecule is
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2 hydrogen and 1 oxygen
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During the water olympics, the boating race showed
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all of the above
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Again, in the water olympics, the paper towel activity most clearly showed
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capillary action
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When water moves from a liquid to a gas the speed of the molecules
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increases
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The source of energy during the process of evaporation is
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the sun
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Water molecules move the slowest in which state
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solid
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Water making a puddle as it falls from the sky is an example of
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cohesion
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Draw a picture of the water cycle. make sure to include the energy source and the four main parts. label all steps.
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...
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Water has several properties which make it unique. One of which is the fact that water is wet. Wetness has to do with two very important forces
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adhesion and cohesion
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Cohesion: water molecules attract to other water molecules, which explains why
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water molecules stick to one another
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Adhesion: the attraction of the water molecule to other substances, which explains why
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water sticks to other objects
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The attraction among water molecules at the surface of a liquid; creates a skin-like barrier between air and underlying water molecules
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Surface Tension
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What is the cause of surface tension
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cohesion
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What is an example of cohesion
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paper clip can float on water when it would typically sink
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what weakens the cohesion of water which affects surface tension
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soap
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when soap weakens the cohesion of water what does it cause
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the ability for substances to float such as pepper
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A term applied to water because it can dissolve many substances
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Universal solvent
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Droplets of water are caused by surface tension and cohesion-water can hold itself up against gravity (compare water to another liquid substance)
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Gravity
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Through the processes of adhesion and cohesion, water is drawn through tiny spaces in a material, such as soil or paper towels,
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Capillary action
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What is an example of capillary action?
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water in a straw
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Draw a picture of what the cohesion of water molecules might look like in liquid form.
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...
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What is cohesion of water molecules?
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Cohesion is water molecules sticking together
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Describe what is happening when capillary action occurs
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Capillary action is when water travels through small spaces
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Where in nature might capillary action take place?
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Water going through the veins of a tree
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List three places where you see examples of water cohesion propery
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Veins of a plant, the penny experiment, water in a cup
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How could you describe the surface of water in your own words?
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Surface tension is a skin like barrier on top of a liquid
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Why do you think it's important that water is a universal solvent?
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It's important because it absorbs nutrients
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We know that soil absorbs water. How do the properties of adhesion and cohesion play a role in the absorption of water in soil?
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Adhesion plays a role because the water molecules can stick to the soil and then cohesion plays a role because the water molecules can stick to the molecules that are stuck to the soil.
