Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 911 · 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? What do we do with “the room it stands in”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🔍 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 stem turns to ice (d) the flower floats away
3. 3.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a strip of cloth (d) a rubber eraser
4. 4.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
5. 5.⚖️ 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 the one thing we change. (a) False (b) True
6. 6.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) False (b) True
8. 8.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
9. 9.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a toddler (d) a pet
10. 10.🧺 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
11. 11.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.🔍 Which is the odd one out? (a) a piece of chalk (b) a piece of foil (c) a glass marble (d) a plastic ruler
13. 13.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a cotton thread (d) a plastic ruler
14. 14.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.True or false: a rubber eraser lets water climb up it. (a) True (b) False
16. 16.⚖️ 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
17. 17.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands
19. 19.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
20. 20.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
22. 22.⚖️ 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) False (b) True
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 kept the same. (a) True (b) False
24. 24.⚖️ 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
25. 25.⚖️ 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 change it (c) we measure it
26. 26.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a magnet (c) food colour (d) a glass of water
28. 28.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
29. 29.🔮 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
30. 30.💧 Which of these does not let water climb? (a) a piece of chalk (b) a glass marble (c) a paper towel (d) a strip of cloth
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.True or false: a strip of cloth does not let water climb. (a) True (b) False
33. 33.⚖️ 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 water (c) the length of the stem (d) time for colour to show
34. 34.⚖️ 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
35. 35.🔮 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
36. 36.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a few hours of waiting (d) turmeric powder
38. 38.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
39. 39.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) a magnet

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