Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 867 · 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 does not let water climb? (a) a strip of cloth (b) a flower stem (c) a sugar cube (d) a plastic ruler
2. 2.🔮 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 turn two colours (c) they stay white (d) they fall off at once
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) a glass of water (d) turmeric powder
4. 4.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) a glass of water (d) a few hours of waiting
6. 6.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
7. 7.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) food colour (d) a balloon
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a white flower (d) a balloon
10. 10.🔍 Which is the odd one out? (a) a piece of chalk (b) a rubber eraser (c) a cotton thread (d) a strip of cloth
11. 11.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
12. 12.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of chalk (c) a strip of cloth (d) a steel spoon
13. 13.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) a strip of cloth (b) a steel spoon (c) a piece of foil (d) a glass marble
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) False (b) True
16. 16.True or false: a rubber eraser does not let water climb. (a) True (b) False
17. 17.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) a toddler (d) anyone, without looking
18. 18.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a glass of water (d) a white flower
20. 20.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of chalk (c) a flower stem (d) a plastic ruler
22. 22.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) turmeric powder (d) a glass of water
24. 24.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
25. 25.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
26. 26.⚖️ 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
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
28. 28.⚖️ 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) time for colour to show (c) the length of the stem
29. 29.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a paper towel
30. 30.⚖️ 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
31. 31.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a glass marble (d) a cotton thread
32. 32.⚖️ 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 length of the stem (c) the room it stands in (d) the kind of flower
33. 33.⚖️ 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 what we measure. (a) False (b) True
34. 34.🧺 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) a balloon
35. 35.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
36. 36.True or false: a glass marble lets water climb up it. (a) True (b) False
37. 37.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) nothing ever happens (d) colour climbs up it
38. 38.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
39. 39.True or false: a paper towel does not let water climb. (a) True (b) False
40. 40.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed

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