Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 100 · 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.True or false: a piece of chalk does not let water climb. (a) True (b) False
2. 2.💧 Which of these does not let water climb? (a) a plastic ruler (b) a sugar cube (c) a piece of chalk (d) a strip of cloth
3. 3.⚖️ 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 the one thing we change. (a) True (b) False
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the room it stands in (c) the length of the stem
5. 5.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of chalk (c) a rubber eraser (d) a sugar cube
6. 6.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) turmeric powder (c) food colour (d) a white flower
8. 8.⚖️ 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
9. 9.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
10. 10.True or false: a rubber eraser does not let water climb. (a) False (b) True
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a mirror (d) a few hours of waiting
12. 12.⚖️ 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 keep it the same (c) we change it
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) a white flower (d) a glass of water
14. 14.💧 Which of these lets water climb up it? (a) a flower stem (b) a plastic ruler (c) a rubber eraser (d) a piece of foil
15. 15.💧 Which of these does not let water climb? (a) a paper towel (b) a glass marble (c) a strip of cloth (d) a sugar cube
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a glass of water (d) a magnet
17. 17.True or false: a steel spoon does not let water climb. (a) True (b) False
18. 18.True or false: a strip of cloth does not let water climb. (a) False (b) True
19. 19.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.🔍 Which is the odd one out? (a) a flower stem (b) a cotton thread (c) a plastic ruler (d) a paper towel
21. 21.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) rub your eyes (d) wash your hands
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) a battery cell
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) False (b) True
24. 24.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
25. 25.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
26. 26.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
27. 27.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the stem turns to ice (d) the petals turn bluish
28. 28.🔮 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
29. 29.True or false: a sugar cube does not let water climb. (a) True (b) False
30. 30.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a paper towel (c) a piece of foil (d) a steel spoon
31. 31.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
32. 32.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) a flower stem (b) a cotton thread (c) a steel spoon (d) a paper towel
35. 35.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
36. 36.⚖️ 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 amount of colour (b) the kind of flower (c) the room it stands in (d) the length of the stem
37. 37.⚖️ 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 keep it the same (b) we change it (c) we measure it
38. 38.🧺 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) a mirror (d) a glass of water
39. 39.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) magnetism (d) capillary action
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) a balloon (d) a mirror

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