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