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 what we measure? (a) the size of the plant (b) the same kind of bag (c) amount of water drops (d) the kind of plant
- 2.🛟 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
- 3.🪴 Which of these is a job of the stem? (a) make food in sunlight (b) take in water from soil (c) make seeds (d) hold up the leaves
- 4.🧺 Which of these is not needed for the leafy bag test? (a) a potted plant (b) a few hours (c) turmeric powder (d) a clear plastic bag
- 5.🧺 Do we need vinegar for the leafy bag test? (a) needed (b) not needed
- 6.True or false: a magnet is needed for the leafy bag test. (a) True (b) False
- 7.True or false: give out water vapour is a job of the leaves. (a) False (b) True
- 8.🧺 Do we need a few hours for the leafy bag test? (a) needed (b) not needed
- 9.🔮 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
- 10.⚖️ 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 keep it the same (b) we measure it (c) we change it
- 11.True or false: make food in sunlight is a job of the stem. (a) True (b) False
- 12.True or false: sunlight is not needed for the leafy bag test. (a) True (b) False
- 13.⚖️ 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 keep it the same (c) we change it
- 14.🧺 Do we need a mirror for the leafy bag test? (a) needed (b) not needed
- 15.🧺 Do we need a magnet for the leafy bag test? (a) needed (b) not needed
- 16.🪴 Which of these is a job of the leaves? (a) take in water from soil (b) hold up the leaves (c) make food in sunlight (d) hold the plant in soil
- 17.🪴 Which part of a plant does this job: make seeds? (a) flower (b) stem (c) roots (d) leaves
- 18.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) vinegar (c) a rubber band (d) a potted plant
- 19.🪴 Where did the water inside the bag come from? (a) the plastic (b) the leaves (c) the rubber band (d) the rain
- 20.⚖️ 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
- 21.⚖️ 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) False (b) True
- 22.🧺 Do we need a potted plant for the leafy bag test? (a) not needed (b) needed
- 23.⚖️ 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
- 24.🪴 Which of these is a job of the stem? (a) hold the plant in soil (b) take in water from soil (c) make food in sunlight (d) carry water upward
- 25.True or false: vinegar is not needed for the leafy bag test. (a) True (b) False
- 26.True or false: a battery cell is needed for the leafy bag test. (a) False (b) True
- 27.🧺 Which of these is not needed for the leafy bag test? (a) a few hours (b) yeast (c) sunlight (d) a clear plastic bag
- 28.⚖️ 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
- 29.⚖️ 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 change it (b) we keep it the same (c) we measure it
- 30.🪴 Which part of a plant does this job: take in water from soil? (a) flower (b) leaves (c) roots (d) stem
- 31.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a rubber band (c) a battery cell (d) a potted plant
- 32.📘 What do we call plants giving out water vapour from their leaves? (a) transpiration (b) reflection (c) germination (d) digestion
- 33.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a magnet (b) a potted plant (c) sunlight (d) a clear plastic bag
- 34.⚖️ 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 keep it the same (c) we measure it
- 35.🔮 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 more water (d) much less water
- 36.🧺 Do we need a clear plastic bag for the leafy bag test? (a) not needed (b) needed
- 37.True or false: make seeds is a job of the flower. (a) False (b) True
- 38.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) a battery cell (c) a clear plastic bag (d) a mirror
- 39.True or false: hold up the leaves is a job of the stem. (a) False (b) True
- 40.🧺 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) sunlight (d) a mirror
Answer key
- amount of water drops
- it can block breathing
- hold up the leaves
- turmeric powder
- not needed
- False
- True
- needed
- the hot sunny day
- we keep it the same
- False
- False
- we change it
- not needed
- not needed
- make food in sunlight
- flower
- vinegar
- the leaves
- True
- False
- needed
- False
- carry water upward
- True
- False
- yeast
- True
- we keep it the same
- roots
- a battery cell
- transpiration
- a magnet
- we keep it the same
- much less water
- needed
- True
- a clear plastic bag
- True
- a mirror
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