Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 79 · 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? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) a few hours of waiting (d) a magnet
4. 4.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show (d) the room it stands in
5. 5.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
6. 6.True or false: a sugar cube does not let water climb. (a) False (b) True
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) a balloon (d) a white flower
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) a balloon (d) food colour
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) yeast
10. 10.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a balloon (d) food colour
12. 12.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a steel spoon (d) a sugar cube
14. 14.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a piece of foil (d) a cotton thread
16. 16.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
17. 17.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) capillary action (d) evaporation
18. 18.🔍 Which is the odd one out? (a) a piece of chalk (b) a cotton thread (c) a plastic ruler (d) a paper towel
19. 19.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) turmeric powder (d) food colour
21. 21.True or false: a piece of foil lets water climb up it. (a) True (b) False
22. 22.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a steel spoon (c) a glass marble (d) a piece of foil
23. 23.🔍 Which is the odd one out? (a) a cotton thread (b) a steel spoon (c) a glass marble (d) a piece of foil
24. 24.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) a white flower (d) a few hours of waiting
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
28. 28.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of chalk (c) a glass marble (d) a strip of cloth
31. 31.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
32. 32.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the petals turn bluish (d) the flower floats away
33. 33.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
34. 34.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
35. 35.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
36. 36.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
37. 37.True or false: a paper towel does not let water climb. (a) True (b) False
38. 38.⚖️ 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
39. 39.True or false: a flower stem does not let water climb. (a) False (b) True
40. 40.True or false: a piece of foil does not let water climb. (a) False (b) True

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