Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 250 · 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.⚖️ 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) True (b) False
2. 2.⚖️ 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) True (b) False
3. 3.⚖️ 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 water (b) the room it stands in (c) time for colour to show (d) the kind of flower
4. 4.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it turns to plastic (d) it sinks at once
5. 5.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
6. 6.⚖️ 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
7. 7.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
8. 8.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
9. 9.🧺 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) food colour
10. 10.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler
11. 11.⚖️ 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) time for colour to show (c) the room it stands in (d) the amount of colour
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a few hours of waiting (d) a mirror
13. 13.⚖️ 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
14. 14.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) a white flower (d) yeast
16. 16.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they turn two colours (c) they all turn green (d) they fall off at once
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a steel spoon (d) a sugar cube
19. 19.⚖️ 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
20. 20.True or false: a flower stem lets water climb up it. (a) True (b) False
21. 21.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
22. 22.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a glass marble (d) a paper towel
23. 23.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
24. 24.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a steel spoon (c) a glass marble (d) a plastic ruler
25. 25.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
26. 26.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the flower floats away (d) the water turns green
27. 27.True or false: a sugar cube does not let water climb. (a) False (b) True
28. 28.💧 Which of these lets water climb up it? (a) a paper towel (b) a plastic ruler (c) a glass marble (d) a steel spoon
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a magnet (d) a glass of water
30. 30.🔍 Which is the odd one out? (a) a piece of chalk (b) a cotton thread (c) a plastic ruler (d) a strip of cloth
31. 31.⚖️ 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 keep it the same (b) we change it (c) we measure it
32. 32.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
33. 33.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
34. 34.True or false: a paper towel does not let water climb. (a) True (b) False
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a battery cell (c) a glass of water (d) food colour
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a glass of water (d) turmeric powder
37. 37.💧 Which of these does not let water climb? (a) a glass marble (b) a piece of chalk (c) a cotton thread (d) a sugar cube
38. 38.🔍 Which is the odd one out? (a) a flower stem (b) a strip of cloth (c) a sugar cube (d) a glass marble
39. 39.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a cotton thread (d) a rubber eraser
40. 40.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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