Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 45 · 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) turmeric powder (b) food colour (c) a few hours of waiting (d) a white flower
2. 2.⚖️ 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 change it (b) we measure it (c) we keep it the same
3. 3.💧 Which of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a cotton thread (d) a steel spoon
4. 4.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a rubber eraser (d) a sugar cube
5. 5.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a magnet (d) a white flower
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a few hours of waiting (d) a balloon
7. 7.🧺 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) yeast
8. 8.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
9. 9.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.⚖️ 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 water (b) the room it stands in (c) time for colour to show (d) the length of the stem
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a battery cell (c) a few hours of waiting (d) a mirror
12. 12.⚖️ 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 what we measure. (a) False (b) True
13. 13.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
14. 14.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a strip of cloth (d) a plastic ruler
15. 15.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes
16. 16.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
17. 17.🔍 Which is the odd one out? (a) a rubber eraser (b) a paper towel (c) a flower stem (d) a sugar cube
18. 18.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
19. 19.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a cotton thread (d) a steel spoon
20. 20.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) it turns to plastic (d) colour climbs up it
21. 21.⚖️ 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 room it stands in
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a mirror (d) food colour
23. 23.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
24. 24.True or false: a paper towel lets water climb up it. (a) False (b) True
25. 25.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) melting (d) evaporation
26. 26.🔍 Which is the odd one out? (a) a piece of chalk (b) a rubber eraser (c) a piece of foil (d) a steel spoon
27. 27.💧 Which of these lets water climb up it? (a) a piece of foil (b) a flower stem (c) a rubber eraser (d) a plastic ruler
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) food colour (d) a mirror
29. 29.🔮 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
30. 30.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
31. 31.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) through tiny stem tubes (d) it rains on them
32. 32.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.🧺 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) a white flower
34. 34.⚖️ 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 measure it (b) we change it (c) we keep it the same
35. 35.⚖️ 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
36. 36.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the stem turns blue (d) the flower glows
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a magnet (d) a few hours of waiting
38. 38.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
39. 39.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a paper towel (d) a steel spoon
40. 40.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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