Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 294 · 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 is the odd one out? (a) a strip of cloth (b) a plastic ruler (c) a steel spoon (d) a piece of foil
2. 2.⚖️ 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 room it stands in (b) the length of the stem (c) the amount of colour (d) time for colour to show
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) a glass of water (d) a white flower
4. 4.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
6. 6.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a few hours of waiting (c) a glass of water (d) food colour
8. 8.⚖️ 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 water (b) the length of the stem (c) time for colour to show
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) food colour (c) a battery cell (d) a magnet
10. 10.💧 Which of these does not let water climb? (a) a steel spoon (b) a paper towel (c) a cotton thread (d) a piece of chalk
11. 11.True or false: a sugar cube lets water climb up it. (a) False (b) True
12. 12.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a flower stem (d) a steel spoon
13. 13.⚖️ 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 amount of water (b) time for colour to show (c) the room it stands in (d) the length of the stem
14. 14.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
15. 15.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) a plastic ruler (b) a paper towel (c) a steel spoon (d) a piece of foil
17. 17.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
18. 18.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it sinks at once (d) it turns to plastic
19. 19.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a steel spoon (d) a cotton thread
20. 20.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
21. 21.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
22. 22.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) turmeric powder (d) a few hours of waiting
24. 24.True or false: a strip of cloth does not let water climb. (a) True (b) False
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) food colour (d) a mirror
26. 26.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.True or false: a paper towel does not let water climb. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a rubber eraser (d) a flower stem
30. 30.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
31. 31.🧺 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) food colour (d) yeast
32. 32.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they stay white (c) they all turn green (d) they fall off at once
33. 33.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) wipe them on walls (d) lick your fingers
34. 34.⚖️ 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 length of the stem (c) the kind of flower
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) turmeric powder (d) food colour
36. 36.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a sugar cube (c) a steel spoon (d) a glass marble
37. 37.⚖️ 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
38. 38.⚖️ 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 kept the same. (a) True (b) False
39. 39.⚖️ 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
40. 40.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True

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