Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 592 · 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 balloon for the coloured flower experiment? (a) needed (b) not needed
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) a mirror
3. 3.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a flower stem (c) a plastic ruler (d) a steel spoon
4. 4.True or false: a paper towel does not let water climb. (a) True (b) False
5. 5.🔮 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 all turn green (d) they turn two colours
6. 6.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
7. 7.⚖️ 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 the one thing we change. (a) True (b) False
8. 8.💧 Which of these does not let water climb? (a) a cotton thread (b) a flower stem (c) a piece of foil (d) a sugar cube
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) food colour (c) yeast (d) a balloon
10. 10.🔍 Which is the odd one out? (a) a piece of chalk (b) a sugar cube (c) a cotton thread (d) a piece of foil
11. 11.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
12. 12.🛟 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
13. 13.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a glass of water (c) a balloon (d) a mirror
15. 15.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
16. 16.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a mirror (d) a white flower
18. 18.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a steel spoon (d) a piece of chalk
19. 19.⚖️ 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 keep it the same (b) we change it (c) we measure it
20. 20.True or false: a cotton thread lets water climb up it. (a) False (b) True
21. 21.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the petals turn bluish (d) the flower floats away
22. 22.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) it sinks at once (d) colour climbs up it
23. 23.⚖️ 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) the amount of colour (c) time for colour to show (d) the amount of water
24. 24.⚖️ 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 change it (b) we keep it the same (c) we measure it
25. 25.💧 Which of these does not let water climb? (a) a cotton thread (b) a plastic ruler (c) a paper towel (d) a sugar cube
26. 26.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
27. 27.💧 Which of these does not let water climb? (a) a piece of chalk (b) a sugar cube (c) a glass marble (d) a paper towel
28. 28.⚖️ 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 colour (c) the length of the stem (d) the amount of water
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a white flower (d) a glass of water
30. 30.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
31. 31.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
32. 32.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) it is sprayed on (d) through tiny stem tubes
33. 33.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
34. 34.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
35. 35.🔍 Which is the odd one out? (a) a glass marble (b) a plastic ruler (c) a steel spoon (d) a strip of cloth
36. 36.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
37. 37.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.⚖️ 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 kind of flower (c) the length of the stem
39. 39.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
40. 40.True or false: a steel spoon does not let water climb. (a) True (b) False

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