Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 123 · 40 questions

What you do (Water climbs thin tubes): 1. Mix food colour into a glass of water. 2. An adult trims the flower stem and stands it in the coloured water. 3. Check the petals every few hours and draw what you see. 4. Wash your hands after handling food colour.

1. 1.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) time for colour to show (c) the amount of colour
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the room it stands in (b) the length of the stem (c) time for colour to show
3. 3.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
5. 5.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) the petals turn red (d) no colour change
6. 6.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
7. 7.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
8. 8.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
9. 9.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a strip of cloth (d) a glass marble
10. 10.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
11. 11.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
12. 12.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
14. 14.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.🔍 Which is the odd one out? (a) a plastic ruler (b) a paper towel (c) a glass marble (d) a piece of foil
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a white flower (d) food colour
18. 18.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
19. 19.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through tiny stem tubes (d) through the air
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a few hours of waiting (d) a mirror
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of colour (b) time for colour to show (c) the length of the stem (d) the amount of water
22. 22.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a flower stem (d) a piece of foil
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a magnet (d) a white flower
24. 24.💧 Which of these does not let water climb? (a) a steel spoon (b) a piece of chalk (c) a flower stem (d) a strip of cloth
25. 25.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
27. 27.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
29. 29.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they fall off at once (c) they stay white (d) they turn two colours
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) food colour (d) a white flower
31. 31.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
32. 32.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is the one thing we change. (a) False (b) True
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) False (b) True
35. 35.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of chalk (c) a strip of cloth (d) a plastic ruler
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the room it stands in (b) the kind of flower (c) time for colour to show (d) the length of the stem
38. 38.True or false: a piece of foil does not let water climb. (a) False (b) True
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) turmeric powder (c) a white flower (d) a magnet
40. 40.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True

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