Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 862 · 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.True or false: a glass marble lets water climb up it. (a) True (b) False
2. 2.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a cotton thread (d) a piece of foil
3. 3.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a strip of cloth (d) a glass marble
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.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.⚖️ 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) time for colour to show (d) the room it stands in
7. 7.True or false: food colour is not 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? Which of these is what we measure? (a) the room it stands in (b) the kind of flower (c) the amount of colour (d) time for colour to show
9. 9.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
10. 10.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
11. 11.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) it rains on them (d) through tiny stem tubes
12. 12.💧 Which of these does not let water climb? (a) a flower stem (b) a sugar cube (c) a cotton thread (d) a plastic ruler
13. 13.True or false: a paper towel lets water climb up it. (a) True (b) False
14. 14.🛟 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
15. 15.⚖️ 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 keep it the same (b) we change it (c) we measure it
16. 16.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
17. 17.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
18. 18.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
20. 20.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
21. 21.🧺 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 white flower (d) a battery cell
22. 22.True or false: a flower stem lets water climb up it. (a) False (b) True
23. 23.⚖️ 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
24. 24.True or false: a sugar cube does not let water climb. (a) True (b) False
25. 25.⚖️ 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) False (b) True
26. 26.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they all turn green (c) they stay white (d) they turn two colours
27. 27.⚖️ 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 measure it (c) we change it
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a balloon (d) food colour
29. 29.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
30. 30.⚖️ 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 change it (b) we measure it (c) we keep it the same
31. 31.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a balloon (c) a white flower (d) a few hours of waiting
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) a glass of water (d) a few hours of waiting
34. 34.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
35. 35.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of chalk (c) a flower stem (d) a glass marble
36. 36.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a steel spoon (d) a piece of chalk
37. 37.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a few hours of waiting (c) a white flower (d) a glass of water
39. 39.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a strip of cloth (d) a steel spoon
40. 40.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True

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