Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 519 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) food colour (c) a few hours of waiting (d) a white flower
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) a battery cell (d) a few hours of waiting
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 all turn green (b) they turn two colours (c) they stay white (d) they fall off at once
4. 4.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
5. 5.🔍 Which is the odd one out? (a) a strip of cloth (b) a glass marble (c) a paper towel (d) a sugar cube
6. 6.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.⚖️ 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) True (b) False
8. 8.⚖️ 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 what we measure. (a) False (b) True
9. 9.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
10. 10.True or false: a rubber eraser does not let water climb. (a) False (b) True
11. 11.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
12. 12.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
13. 13.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
14. 14.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
15. 15.True or false: a rubber eraser lets water climb up it. (a) False (b) True
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a white flower (c) a glass of water (d) food colour
17. 17.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
18. 18.⚖️ 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 kind of flower (d) the room it stands in
19. 19.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a rubber eraser (d) a sugar cube
20. 20.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
21. 21.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of foil (c) a cotton thread (d) a piece of chalk
22. 22.🧺 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) a balloon (d) a glass of water
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) turmeric powder (d) food colour
24. 24.True or false: a cotton thread lets water climb up it. (a) True (b) False
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a glass of water (d) a magnet
26. 26.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
27. 27.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the petals turn bluish (d) the flower floats away
28. 28.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a glass marble (d) a piece of chalk
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) turmeric powder (d) a few hours of waiting
30. 30.⚖️ 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 amount of colour (c) the length of the stem (d) the kind of flower
31. 31.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
32. 32.⚖️ 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 keep it the same (b) we measure it (c) we change it
33. 33.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
34. 34.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a piece of chalk (d) a glass marble
35. 35.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
37. 37.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
38. 38.🧺 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) a battery cell (d) food colour
39. 39.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of chalk (c) a rubber eraser (d) a strip of cloth
40. 40.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed

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