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