Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 283 · 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.⚖️ 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) the amount of water (c) the length of the stem (d) time for colour to show
2. 2.💧 Which of these lets water climb up it? (a) a cotton thread (b) a piece of foil (c) a rubber eraser (d) a plastic ruler
3. 3.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of chalk (c) a glass marble (d) a rubber eraser
4. 4.True or false: a rubber eraser does not let water climb. (a) False (b) True
5. 5.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
6. 6.💧 Which of these does not let water climb? (a) a paper towel (b) a strip of cloth (c) a glass marble (d) a piece of chalk
7. 7.🔍 Which is the odd one out? (a) a steel spoon (b) a strip of cloth (c) a glass marble (d) a piece of foil
8. 8.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) magnetism (d) capillary action
9. 9.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
10. 10.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
11. 11.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it turns to plastic (d) it sinks at once
12. 12.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) a cotton thread (b) a plastic ruler (c) a strip of cloth (d) a flower stem
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) a few hours of waiting (d) a glass of water
15. 15.🔮 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 fall off at once (c) they all turn green (d) they stay white
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a glass of water (c) food colour (d) a white flower
17. 17.⚖️ 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
18. 18.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
19. 19.True or false: a piece of foil lets water climb up it. (a) True (b) False
20. 20.True or false: a paper towel does not let water climb. (a) False (b) True
21. 21.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
22. 22.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
23. 23.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a magnet (c) a glass of water (d) a few hours of waiting
25. 25.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
26. 26.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the stem turns blue (d) the petals turn red
28. 28.⚖️ 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) False (b) True
29. 29.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
30. 30.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
31. 31.⚖️ 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
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a white flower (c) food colour (d) a glass of water
33. 33.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) it is sprayed on (d) through the air
34. 34.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
35. 35.🧺 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) a mirror (d) a glass of water
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a mirror (d) food colour
37. 37.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
38. 38.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
39. 39.⚖️ 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 keep it the same (b) we measure it (c) we change it
40. 40.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a cotton thread (d) a strip of cloth

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