Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 631 · 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 is needed for the coloured flower experiment? (a) yeast (b) turmeric powder (c) a mirror (d) food colour
2. 2.True or false: a paper towel does not let water climb. (a) False (b) True
3. 3.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a plastic ruler (c) a steel spoon (d) a piece of foil
4. 4.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the flower glows (d) the petals turn red
5. 5.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a rubber eraser (d) a paper towel
7. 7.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
8. 8.⚖️ 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 kept the same. (a) True (b) False
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a magnet (d) a few hours of waiting
10. 10.💧 Which of these lets water climb up it? (a) a steel spoon (b) a sugar cube (c) a plastic ruler (d) a glass marble
11. 11.True or false: a piece of chalk does not let water climb. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) a sugar cube (b) a steel spoon (c) a strip of cloth (d) a cotton thread
13. 13.⚖️ 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
14. 14.⚖️ 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 room it stands in (b) the kind of flower (c) the length of the stem (d) time for colour to show
15. 15.⚖️ 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
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a mirror (c) a white flower (d) a glass of water
17. 17.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) nothing ever happens (d) it sinks at once
18. 18.True or false: a paper towel lets water climb up it. (a) False (b) True
19. 19.True or false: a sugar cube lets water climb up it. (a) False (b) True
20. 20.🔮 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 fall off at once (d) they stay white
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a mirror (c) yeast (d) a magnet
22. 22.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.⚖️ 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
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a glass of water (d) yeast
25. 25.⚖️ 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 room it stands in (c) the amount of water (d) the length of the stem
26. 26.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes
27. 27.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
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 length of the stem (b) time for colour to show (c) the kind of flower
29. 29.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a rubber eraser (d) a strip of cloth
30. 30.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
31. 31.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) turmeric powder
33. 33.⚖️ 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 measure it (c) we keep it the same
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a mirror (c) a glass of water (d) a white flower
35. 35.⚖️ 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) True (b) False
36. 36.True or false: a piece of foil lets water climb up it. (a) True (b) False
37. 37.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.⚖️ 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
39. 39.⚖️ 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
40. 40.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed

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