Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 186 · 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.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) rub your eyes (d) lick your fingers
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a magnet (c) yeast (d) a mirror
3. 3.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) no colour change (d) the flower glows
4. 4.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
5. 5.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
6. 6.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the petals turn bluish (d) the water turns green
7. 7.⚖️ 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 change it (b) we measure it (c) we keep it the same
8. 8.⚖️ 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 room it stands in (b) the length of the stem (c) the amount of water (d) time for colour to show
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) a glass of water (d) a white flower
10. 10.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a rubber eraser (d) a paper towel
11. 11.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.🔮 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 fall off at once (c) they turn two colours (d) they stay white
13. 13.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
14. 14.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) food colour (d) a battery cell
16. 16.🔍 Which is the odd one out? (a) a cotton thread (b) a sugar cube (c) a flower stem (d) a plastic ruler
17. 17.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a paper towel (d) a piece of foil
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.⚖️ 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) False (b) True
20. 20.True or false: a piece of foil lets water climb up it. (a) True (b) False
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a white flower (c) food colour (d) a glass of water
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) food colour (d) a glass of water
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) False (b) True
24. 24.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) nothing ever happens (d) colour climbs up it
25. 25.⚖️ 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) False (b) True
26. 26.True or false: a glass marble does not let water climb. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) a piece of chalk (b) a sugar cube (c) a cotton thread (d) a steel spoon
28. 28.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
29. 29.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
30. 30.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
31. 31.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
32. 32.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
33. 33.⚖️ 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 kind of flower (c) the amount of water (d) time for colour to show
34. 34.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) turmeric powder (c) food colour (d) a few hours of waiting
36. 36.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a rubber eraser (d) a sugar cube
37. 37.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
38. 38.True or false: a strip of cloth lets water climb up it. (a) True (b) False
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) yeast (c) food colour (d) a glass of water
40. 40.⚖️ 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 keep it the same (b) we change it (c) we measure it

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