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.🧺 Do we need a few hours for the leafy bag test? (a) not needed (b) needed
- 2.🧺 Which of these is not needed for the leafy bag test? (a) sunlight (b) a potted plant (c) a rubber band (d) a mirror
- 3.True or false: vinegar is needed for the leafy bag test. (a) False (b) True
- 4.True or false: take in water from soil is a job of the roots. (a) False (b) True
- 5.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) sunlight (c) vinegar (d) a clear plastic bag
- 6.🧺 Do we need a clear plastic bag for the leafy bag test? (a) not needed (b) needed
- 7.True or false: a rubber band is needed for the leafy bag test. (a) False (b) True
- 8.🪴 Which of these is a job of the flower? (a) make food in sunlight (b) take in water from soil (c) make seeds (d) give out water vapour
- 9.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny insects (b) salt crystals (c) nothing at all (d) tiny water drops
- 10.🛟 How should the plastic bag be tied around the branch? (a) with a hot glue gun (b) as tight as possible (c) with sharp wire (d) gently, not too tight
- 11.🧺 Which of these is not needed for the leafy bag test? (a) a clear plastic bag (b) a few hours (c) a magnet (d) a potted plant
- 12.True or false: give out water vapour is a job of the leaves. (a) False (b) True
- 13.🪴 Which of these is a job of the roots? (a) carry water upward (b) make food in sunlight (c) make seeds (d) hold the plant in soil
- 14.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) a potted plant (c) a battery cell (d) a mirror
- 15.🧺 Do we need a magnet for the leafy bag test? (a) not needed (b) needed
- 16.⚖️ 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) amount of water drops (b) the same kind of bag (c) sun or shade
- 17.⚖️ 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 the one thing we change. (a) False (b) True
- 18.True or false: yeast is needed for the leafy bag test. (a) False (b) True
- 19.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is what we measure. (a) True (b) False
- 20.🪴 Where did the water inside the bag come from? (a) the rubber band (b) the rain (c) the plastic (d) the leaves
- 21.🪴 Which of these is a job of the leaves? (a) hold the plant in soil (b) make seeds (c) make food in sunlight (d) hold up the leaves
- 22.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it turns blue (c) it flowers more (d) it wilts and droops
- 23.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a clear plastic bag (c) yeast (d) a few hours
- 24.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the kind of plant”? (a) we change it (b) we keep it the same (c) we measure it
- 25.⚖️ 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 kept the same. (a) False (b) True
- 26.🪴 Which part of a plant does this job: hold the plant in soil? (a) flower (b) roots (c) stem (d) leaves
- 27.🧺 Which of these is not needed for the leafy bag test? (a) a battery cell (b) sunlight (c) a clear plastic bag (d) a potted plant
- 28.🪴 Which of these is a job of the stem? (a) hold up the leaves (b) give out water vapour (c) take in water from soil (d) make food in sunlight
- 29.🧺 Do we need yeast for the leafy bag test? (a) not needed (b) needed
- 30.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the same kind of bag”? (a) we keep it the same (b) we change it (c) we measure it
- 31.🛟 Why must a plastic bag never go over anyone’s head? (a) it can block breathing (b) it gets wet (c) it is too big (d) it changes colour
- 32.⚖️ 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 time we wait (c) amount of water drops (d) the kind of plant
- 33.🪴 Which part of a plant does this job: take in water from soil? (a) leaves (b) flower (c) roots (d) stem
- 34.🧺 Do we need turmeric powder for the leafy bag test? (a) needed (b) not needed
- 35.🧺 Do we need vinegar for the leafy bag test? (a) needed (b) not needed
- 36.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a clear plastic bag (c) a battery cell (d) a potted plant
- 37.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) it fills with soil (c) exactly the same (d) much less water
- 38.True or false: turmeric powder is needed for the leafy bag test. (a) False (b) True
- 39.🧺 Do we need a battery cell for the leafy bag test? (a) needed (b) not needed
- 40.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the size of the plant is kept the same. (a) False (b) True
Answer key
- needed
- a mirror
- False
- True
- vinegar
- needed
- True
- make seeds
- tiny water drops
- gently, not too tight
- a magnet
- True
- hold the plant in soil
- a potted plant
- not needed
- the same kind of bag
- False
- False
- False
- the leaves
- make food in sunlight
- it wilts and droops
- yeast
- we keep it the same
- True
- roots
- a battery cell
- hold up the leaves
- not needed
- we keep it the same
- it can block breathing
- amount of water drops
- roots
- not needed
- not needed
- a battery cell
- much less water
- False
- not needed
- True
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