Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 516 · 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.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
2. 2.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a sugar cube (d) a rubber eraser
3. 3.⚖️ 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 keep it the same (c) we change it
4. 4.🧺 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 glass of water
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a white flower (c) a mirror (d) turmeric powder
6. 6.🔮 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
7. 7.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) wipe them on walls (d) lick your fingers
8. 8.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) a balloon
10. 10.🔮 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 stay white (c) they turn two colours (d) they all turn green
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a magnet (d) a few hours of waiting
12. 12.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
14. 14.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) capillary action (d) evaporation
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) a glass of water (d) a balloon
16. 16.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
17. 17.⚖️ 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
18. 18.⚖️ 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) True (b) False
19. 19.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
20. 20.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the stem turns to ice (d) the flower floats away
21. 21.⚖️ 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 length of the stem (b) the room it stands in (c) the amount of colour (d) the amount of water
22. 22.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) through tiny stem tubes (d) it is sprayed on
23. 23.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a paper towel (d) a cotton thread
24. 24.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of chalk (c) a cotton thread (d) a plastic ruler
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 mirror (d) food colour
26. 26.⚖️ 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
27. 27.⚖️ 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 kind of flower (b) time for colour to show (c) the length of the stem (d) the room it stands in
28. 28.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of foil (c) a cotton thread (d) a sugar cube
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a balloon (c) turmeric powder (d) a mirror
30. 30.🔍 Which is the odd one out? (a) a flower stem (b) a sugar cube (c) a strip of cloth (d) a plastic ruler
31. 31.🧺 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) yeast (d) a few hours of waiting
32. 32.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a rubber eraser (c) a glass marble (d) a piece of foil
33. 33.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
34. 34.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) a flower stem (b) a cotton thread (c) a glass marble (d) a strip of cloth
36. 36.⚖️ 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 change it (c) we keep it the same
37. 37.⚖️ 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 amount of water
38. 38.💧 Which of these does not let water climb? (a) a glass marble (b) a paper towel (c) a flower stem (d) a cotton thread
39. 39.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
40. 40.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False

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