Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 479 · 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) food colour (b) a glass of water (c) turmeric powder (d) a white flower
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) food colour (c) a mirror (d) a balloon
3. 3.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a steel spoon (d) a cotton thread
4. 4.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
6. 6.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) turmeric powder (d) a white flower
7. 7.🔮 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
8. 8.⚖️ 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
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) turmeric powder (c) a battery cell (d) a mirror
10. 10.💧 Which of these does not let water climb? (a) a piece of chalk (b) a strip of cloth (c) a piece of foil (d) a flower stem
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the amount of colour
12. 12.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a cotton thread (d) a piece of foil
13. 13.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
14. 14.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) colour climbs up it (d) it sinks at once
15. 15.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
16. 16.True or false: a paper towel does not let water climb. (a) True (b) False
17. 17.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
18. 18.⚖️ 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
19. 19.⚖️ 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 colour (b) the room it stands in (c) time for colour to show (d) the length of the stem
20. 20.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
21. 21.True or false: a balloon is not 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.💧 Which of these lets water climb up it? (a) a piece of foil (b) a piece of chalk (c) a glass marble (d) a plastic ruler
24. 24.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) a glass of water (d) food colour
26. 26.💧 Which of these does not let water climb? (a) a paper towel (b) a plastic ruler (c) a flower stem (d) a cotton thread
27. 27.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
28. 28.⚖️ 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 keep it the same (c) we change it
29. 29.⚖️ 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 room it stands in (b) the length of the stem (c) time for colour to show
30. 30.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a glass marble (c) a steel spoon (d) a rubber eraser
31. 31.⚖️ 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) True (b) False
32. 32.⚖️ 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
33. 33.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) the flower glows (d) no colour change
34. 34.🧺 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 balloon (d) a white flower
35. 35.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
36. 36.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.True or false: a rubber eraser does not let water climb. (a) True (b) False
38. 38.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
39. 39.True or false: a piece of foil lets water climb up it. (a) True (b) False
40. 40.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the flower floats away (d) the stem turns to ice

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