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.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we keep it the same (b) we change it (c) we measure it
- 2.⚖️ 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 measure it (b) we change it (c) we keep it the same
- 3.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is kept the same. (a) True (b) False
- 4.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) exactly the same (b) it fills with soil (c) much less water (d) much more water
- 5.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) gently, not too tight (c) with sharp wire (d) with a hot glue gun
- 6.🧺 Which of these is not needed for the leafy bag test? (a) a battery cell (b) a clear plastic bag (c) a rubber band (d) sunlight
- 7.🪴 Which part of a plant does this job: make seeds? (a) stem (b) leaves (c) flower (d) roots
- 8.🧺 Do we need a mirror for the leafy bag test? (a) needed (b) not needed
- 9.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a potted plant (c) a clear plastic bag (d) a mirror
- 10.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is what we measure. (a) False (b) True
- 11.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a few hours (c) a rubber band (d) turmeric powder
- 12.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the cool cloudy day (b) both the same (c) neither of them (d) the hot sunny day
- 13.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) salt crystals (b) nothing at all (c) tiny insects (d) tiny water drops
- 14.🛟 Why must a plastic bag never go over anyone’s head? (a) it gets wet (b) it is too big (c) it changes colour (d) it can block breathing
- 15.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the time we wait”? (a) we change it (b) we measure it (c) we keep it the same
- 16.⚖️ 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 what we measure. (a) True (b) False
- 17.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it wilts and droops (b) it turns blue (c) it grows faster (d) it flowers more
- 18.🧺 Do we need a rubber band for the leafy bag test? (a) not needed (b) needed
- 19.🪴 Which part of a plant does this job: hold the plant in soil? (a) leaves (b) flower (c) stem (d) roots
- 20.⚖️ 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) the kind of plant (c) amount of water drops
- 21.True or false: vinegar is not needed for the leafy bag test. (a) False (b) True
- 22.⚖️ 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 the one thing we change. (a) True (b) False
- 23.🪴 Which of these is a job of the flower? (a) carry water upward (b) give out water vapour (c) hold the plant in soil (d) make seeds
- 24.📘 What do we call plants giving out water vapour from their leaves? (a) reflection (b) germination (c) digestion (d) transpiration
- 25.🪴 Which of these is a job of the stem? (a) hold the plant in soil (b) make food in sunlight (c) make seeds (d) carry water upward
- 26.True or false: hold the plant in soil is a job of the roots. (a) True (b) False
- 27.🧺 Which of these is not needed for the leafy bag test? (a) a rubber band (b) a clear plastic bag (c) sunlight (d) vinegar
- 28.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is the one thing we change. (a) False (b) True
- 29.True or false: hold up the leaves is a job of the stem. (a) False (b) True
- 30.🧺 Which of these is not needed for the leafy bag test? (a) a mirror (b) sunlight (c) a rubber band (d) a potted plant
- 31.🧺 Do we need turmeric powder for the leafy bag test? (a) not needed (b) needed
- 32.🪴 Which of these is a job of the stem? (a) make seeds (b) make food in sunlight (c) hold up the leaves (d) give out water vapour
- 33.⚖️ 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) the time we wait (b) the same kind of bag (c) amount of water drops (d) sun or shade
- 34.⚖️ 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 time we wait
- 35.⚖️ 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) the time we wait (b) the kind of plant (c) sun or shade (d) amount of water drops
- 36.True or false: carry water upward is a job of the leaves. (a) False (b) True
- 37.True or false: give out water vapour is a job of the roots. (a) True (b) False
- 38.⚖️ 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
- 39.True or false: make food in sunlight is a job of the flower. (a) True (b) False
- 40.⚖️ 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 what we measure. (a) False (b) True
Answer key
- we measure it
- we keep it the same
- False
- much less water
- gently, not too tight
- a battery cell
- flower
- not needed
- a mirror
- True
- turmeric powder
- the hot sunny day
- tiny water drops
- it can block breathing
- we keep it the same
- False
- it wilts and droops
- needed
- roots
- the kind of plant
- True
- False
- make seeds
- transpiration
- carry water upward
- True
- vinegar
- False
- True
- a mirror
- not needed
- hold up the leaves
- sun or shade
- the time we wait
- amount of water drops
- False
- False
- we change it
- False
- False
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