Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 757 · 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 flower stem (b) a paper towel (c) a plastic ruler (d) a sugar cube
2. 2.True or false: a piece of foil does not let water climb. (a) False (b) True
3. 3.⚖️ 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
4. 4.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
5. 5.⚖️ 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
6. 6.💧 Which of these does not let water climb? (a) a plastic ruler (b) a paper towel (c) a cotton thread (d) a piece of chalk
7. 7.💧 Which of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a cotton thread (d) a glass marble
8. 8.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.⚖️ 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
10. 10.🔮 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
11. 11.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
12. 12.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) capillary action (d) melting
13. 13.True or false: a plastic ruler does not let water climb. (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 length of the stem (b) the amount of colour (c) time for colour to show (d) the kind of flower
15. 15.⚖️ 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 measure it (b) we keep it the same (c) we change it
16. 16.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
18. 18.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
19. 19.⚖️ 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) time for colour to show (c) the length of the stem (d) the room it stands in
20. 20.True or false: a steel spoon does not let water climb. (a) True (b) False
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.🔮 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 stay white (c) they turn two colours (d) they fall off at once
23. 23.⚖️ 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 the one thing we change. (a) True (b) False
24. 24.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
25. 25.🧺 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) a few hours of waiting (d) a battery cell
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) turmeric powder (d) a glass of water
27. 27.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
28. 28.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
29. 29.True or false: a cotton thread does not let water climb. (a) True (b) False
30. 30.True or false: a steel spoon lets water climb up it. (a) True (b) False
31. 31.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
32. 32.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
33. 33.💧 Which of these does not let water climb? (a) a piece of foil (b) a strip of cloth (c) a sugar cube (d) a piece of chalk
34. 34.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a piece of chalk (d) a glass marble
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a magnet (c) a white flower (d) food colour
36. 36.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
38. 38.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of chalk (c) a sugar cube (d) a strip of cloth
39. 39.🔍 Which is the odd one out? (a) a flower stem (b) a sugar cube (c) a piece of foil (d) a strip of cloth
40. 40.True or false: a strip of cloth does not let water climb. (a) True (b) False

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