Welcome
to our Water Unit in third grade science where students learn
about the special properties of water!
Below are pictures of us involved in exciting science experiments where we are exploring the properties of water.
Click here for the Unit Goals and Objectives
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Properties of Water In the first experiment, students applied drops of water on four different materials to observe how water behaved differently on each surface. The students tested water on wax paper, aluminum foil, paper, and paper towel. |
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Surface Tension To learn about surface tension, students added drops of water on top to a penny. They were surprised to find how many drops would fit before the water fell off the penny. Surface tension at work! |
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Students found that adding salt to the
water strengthened surface tension, and adding soap to the water weakened
the surface tension.
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Water on a Slope To observe how water reacts when placed on a slope, students added drops of water to a tray covered with wax paper. They increased the angle of the slope to determine how the angle affects the speed of the water. |
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Students even took part in water races
for fun after completing the experiment. They also raced small drops
of water with large drops of water to see which ones traveled faster down
the slope.
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Hot and Cold Water Students observed how a bottle of green room temperature water changed when added to a glass of ice cold water and then a glass of hot water. They found that the water contracted when added to cold water and expanded when added to hot water. A straw attached to the top of the room temperature bottle helped students observe the contraction and expansion of the green water. |
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