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