Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 960 · 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.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) wipe them on walls
2. 2.⚖️ 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) True (b) False
3. 3.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they turn two colours (d) they fall off at once
4. 4.⚖️ 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 change it (b) we keep it the same (c) we measure it
5. 5.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a rubber eraser (c) a glass marble (d) a piece of foil
6. 6.🔍 Which is the odd one out? (a) a cotton thread (b) a glass marble (c) a rubber eraser (d) a piece of foil
7. 7.⚖️ 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 measure it (b) we keep it the same (c) we change it
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) turmeric powder (d) a magnet
9. 9.⚖️ 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
10. 10.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a balloon (c) food colour (d) a glass of water
12. 12.🧺 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 white flower (d) a battery cell
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) a few hours of waiting (d) a glass of water
14. 14.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
15. 15.⚖️ 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) the amount of water (d) the amount of colour
16. 16.True or false: a steel spoon lets water climb up it. (a) False (b) True
17. 17.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.True or false: a strip of cloth does not let water climb. (a) False (b) True
19. 19.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
20. 20.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
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 length of the stem (b) the amount of colour (c) the amount of water (d) time for colour to show
22. 22.⚖️ 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 amount of colour (c) the length of the stem
23. 23.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) no colour change (d) the stem turns blue
24. 24.True or false: a sugar cube lets water climb up it. (a) True (b) False
25. 25.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
27. 27.True or false: a strip of cloth lets water climb up it. (a) True (b) False
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a magnet (d) a few hours of waiting
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a battery cell (c) a mirror (d) turmeric powder
31. 31.⚖️ 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) False (b) True
32. 32.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a flower stem (d) a plastic ruler
33. 33.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a rubber eraser (d) a sugar cube
34. 34.🔮 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
35. 35.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
36. 36.⚖️ 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
37. 37.True or false: a paper towel does not let water climb. (a) True (b) False
38. 38.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
39. 39.🔍 Which is the odd one out? (a) a piece of foil (b) a cotton thread (c) a strip of cloth (d) a piece of chalk
40. 40.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a plastic ruler (d) a glass marble

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