Transpiration Experiment Worksheet
What you do (Roots in, leaves out): 1. Water the potted plant well. 2. Slip a clear plastic bag over a leafy branch. 3. Close it gently with a rubber band — not too tight. 4. Leave it in the sun for a few hours, then look for drops.
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- 1.🛟 Why must a plastic bag never go over anyone’s head? (a) it gets wet (b) it can block breathing (c) it is too big (d) it changes colour
- 2.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) amount of water drops (b) sun or shade (c) the same kind of bag (d) the kind of plant
- 3.🪴 Through which part does a plant take in water from the soil? (a) the flowers (b) the fruits (c) the leaves (d) the roots
- 4.True or false: a clear plastic bag is not needed for the leafy bag test. (a) True (b) False
- 5.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we keep it the same (b) we change it (c) we measure it
- 6.🧺 Do we need a clear plastic bag for the leafy bag test? (a) not needed (b) needed
- 7.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) sunlight (c) a few hours (d) a battery cell
- 8.🧺 Do we need a battery cell for the leafy bag test? (a) needed (b) not needed
- 9.True or false: carry water upward is a job of the roots. (a) False (b) True
- 10.🪴 Which part of a plant does this job: make food in sunlight? (a) flower (b) stem (c) roots (d) leaves
- 11.🪴 Which of these is a job of the stem? (a) make seeds (b) take in water from soil (c) hold up the leaves (d) give out water vapour
- 12.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the time we wait is what we measure. (a) True (b) False
- 13.True or false: turmeric powder is needed for the leafy bag test. (a) False (b) True
- 14.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) vinegar (b) a rubber band (c) sunlight (d) a potted plant
- 15.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) petals (b) stomata (c) veins (d) roots
- 16.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) sun or shade (b) the same kind of bag (c) the kind of plant (d) amount of water drops
- 17.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a mirror (c) sunlight (d) a clear plastic bag
- 18.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is kept the same. (a) False (b) True
- 19.🪴 Which of these is a job of the flower? (a) make seeds (b) hold up the leaves (c) give out water vapour (d) hold the plant in soil
- 20.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we measure it (b) we change it (c) we keep it the same
- 21.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) sun or shade (b) amount of water drops (c) the kind of plant
- 22.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the cool cloudy day (b) neither of them (c) the hot sunny day (d) both the same
- 23.True or false: a potted plant is needed for the leafy bag test. (a) False (b) True
- 24.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) much less water (c) it fills with soil (d) exactly the same
- 25.🛟 How should the plastic bag be tied around the branch? (a) gently, not too tight (b) with a hot glue gun (c) as tight as possible (d) with sharp wire
- 26.🧺 Do we need a mirror for the leafy bag test? (a) needed (b) not needed
- 27.🪴 Which part of a plant does this job: carry water upward? (a) flower (b) leaves (c) stem (d) roots
- 28.🧺 Do we need a potted plant for the leafy bag test? (a) not needed (b) needed
- 29.🧺 Which of these is needed for the leafy bag test? (a) vinegar (b) a mirror (c) a battery cell (d) sunlight
- 30.🪴 Which part of a plant does this job: take in water from soil? (a) leaves (b) roots (c) stem (d) flower
- 31.True or false: a magnet is needed for the leafy bag test. (a) True (b) False
- 32.🧺 Which of these is not needed for the leafy bag test? (a) a mirror (b) a potted plant (c) sunlight (d) a clear plastic bag
- 33.🧺 Do we need a rubber band for the leafy bag test? (a) needed (b) not needed
- 34.🧺 Do we need a few hours for the leafy bag test? (a) not needed (b) needed
- 35.True or false: carry water upward is a job of the stem. (a) False (b) True
- 36.🧺 Which of these is not needed for the leafy bag test? (a) sunlight (b) a clear plastic bag (c) yeast (d) a few hours
- 37.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the kind of plant is the one thing we change. (a) True (b) False
- 38.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a few hours (c) turmeric powder (d) a potted plant
- 39.True or false: a mirror is needed for the leafy bag test. (a) True (b) False
- 40.True or false: a battery cell is needed for the leafy bag test. (a) False (b) True
Answer key
- it can block breathing
- sun or shade
- the roots
- False
- we keep it the same
- needed
- a battery cell
- not needed
- False
- leaves
- hold up the leaves
- False
- False
- vinegar
- stomata
- amount of water drops
- a mirror
- True
- make seeds
- we change it
- the kind of plant
- the hot sunny day
- True
- much less water
- gently, not too tight
- not needed
- stem
- needed
- sunlight
- roots
- False
- a mirror
- needed
- needed
- True
- yeast
- False
- turmeric powder
- False
- False
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