Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 852 · 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.💧 Which of these lets water climb up it? (a) a flower stem (b) a plastic ruler (c) a rubber eraser (d) a glass marble
2. 2.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a piece of foil (d) a piece of chalk
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a few hours of waiting (d) yeast
4. 4.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.⚖️ 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 amount of colour (b) the length of the stem (c) time for colour to show
6. 6.💧 Which of these lets water climb up it? (a) a piece of foil (b) a strip of cloth (c) a rubber eraser (d) a steel spoon
7. 7.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a strip of cloth (d) a piece of chalk
8. 8.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.⚖️ 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 kind of flower (b) the amount of water (c) time for colour to show (d) the length of the stem
10. 10.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red
11. 11.⚖️ 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
12. 12.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
13. 13.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (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 keep it the same (b) we measure it (c) we change it
16. 16.True or false: a cotton thread lets water climb up it. (a) True (b) False
17. 17.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) through tiny stem tubes (d) it is sprayed on
18. 18.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) a mirror (d) turmeric powder
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
22. 22.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
23. 23.⚖️ 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 keep it the same (b) we measure it (c) we change it
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) turmeric powder (d) a glass of water
25. 25.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
26. 26.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
27. 27.💧 Which of these lets water climb up it? (a) a cotton thread (b) a steel spoon (c) a rubber eraser (d) a glass marble
28. 28.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
29. 29.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
30. 30.💧 Which of these does not let water climb? (a) a piece of chalk (b) a flower stem (c) a paper towel (d) a plastic ruler
31. 31.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
32. 32.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a battery cell (d) a white flower
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.⚖️ 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 length of the stem (d) the room it stands in
36. 36.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.True or false: a glass marble lets water climb up it. (a) False (b) True
38. 38.True or false: a strip of cloth lets water climb up it. (a) True (b) False
39. 39.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) colour climbs up it (d) nothing ever happens
40. 40.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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