Testing Plants Need Water - 2nd Grade Science
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Which measurement is most directly related to growth: plant height, pot color, or table size?
Which measurement is most directly related to growth: plant height, pot color, or table size?
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Plant height. Height directly shows if the plant is growing.
Plant height. Height directly shows if the plant is growing.
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Which option best describes a fair test for water and plant growth?
Which option best describes a fair test for water and plant growth?
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Change only water; keep all other conditions the same. Controls variables to isolate water's effect on growth.
Change only water; keep all other conditions the same. Controls variables to isolate water's effect on growth.
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What should you do at the same time each day when collecting growth data?
What should you do at the same time each day when collecting growth data?
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Measure and record at the same time each day. Consistent timing prevents time-of-day from affecting data.
Measure and record at the same time each day. Consistent timing prevents time-of-day from affecting data.
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What is a simple hypothesis for testing whether plants need water to grow?
What is a simple hypothesis for testing whether plants need water to grow?
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If a plant gets no water, then it will not grow well. A hypothesis predicts what will happen in the experiment.
If a plant gets no water, then it will not grow well. A hypothesis predicts what will happen in the experiment.
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Which option should change in this investigation: amount of water or amount of sunlight?
Which option should change in this investigation: amount of water or amount of sunlight?
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Amount of water. Only the independent variable should change in an experiment.
Amount of water. Only the independent variable should change in an experiment.
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What is a fair test in a plant-water investigation?
What is a fair test in a plant-water investigation?
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Only water amount changes; other conditions stay the same. Fair tests change only one variable at a time.
Only water amount changes; other conditions stay the same. Fair tests change only one variable at a time.
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What is one variable that should be kept the same for all plants in this investigation?
What is one variable that should be kept the same for all plants in this investigation?
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Same type of plant. Keeping variables constant ensures a fair test.
Same type of plant. Keeping variables constant ensures a fair test.
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Which option is the experimental group: plants watered normally or plants not watered?
Which option is the experimental group: plants watered normally or plants not watered?
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Plants not watered. Experimental groups get the changed condition being tested.
Plants not watered. Experimental groups get the changed condition being tested.
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What is the control group in a water-and-growth plant investigation?
What is the control group in a water-and-growth plant investigation?
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Plants that get normal water (the usual amount). Control groups get the normal treatment for comparison.
Plants that get normal water (the usual amount). Control groups get the normal treatment for comparison.
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What is the dependent variable when testing whether plants need water to grow?
What is the dependent variable when testing whether plants need water to grow?
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Plant growth (such as height or number of leaves). The variable you measure to see if it changes.
Plant growth (such as height or number of leaves). The variable you measure to see if it changes.
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What is one reason to use more than one plant in each group?
What is one reason to use more than one plant in each group?
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To reduce the effect of one unusual plant. Averages from multiple plants are more reliable than one.
To reduce the effect of one unusual plant. Averages from multiple plants are more reliable than one.
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What is the independent variable when testing whether plants need water to grow?
What is the independent variable when testing whether plants need water to grow?
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Amount of water given to the plant. The variable you change on purpose in an experiment.
Amount of water given to the plant. The variable you change on purpose in an experiment.
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What is a good unit to record plant height for a 2nd grade investigation?
What is a good unit to record plant height for a 2nd grade investigation?
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Centimeters (cm). Centimeters are small units good for measuring plant height.
Centimeters (cm). Centimeters are small units good for measuring plant height.
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What is one clear way to record plant growth data each day?
What is one clear way to record plant growth data each day?
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Measure and write the height each day. Daily measurements track changes over time.
Measure and write the height each day. Daily measurements track changes over time.
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What should be kept the same about light to make the investigation fair?
What should be kept the same about light to make the investigation fair?
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Same amount of sunlight each day. Equal light prevents sunlight from affecting the results.
Same amount of sunlight each day. Equal light prevents sunlight from affecting the results.
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