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