Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 749 · 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? Which of these is the one thing we change? (a) the kind of flower (b) time for colour to show (c) the length of the stem (d) the amount of colour
2. 2.💧 Which of these does not let water climb? (a) a strip of cloth (b) a cotton thread (c) a paper towel (d) a rubber eraser
3. 3.⚖️ 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
4. 4.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
5. 5.True or false: a piece of foil lets water climb up it. (a) True (b) False
6. 6.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a white flower (d) a balloon
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a glass of water (d) yeast
10. 10.⚖️ 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
11. 11.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
12. 12.True or false: a paper towel lets water climb up it. (a) False (b) True
13. 13.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they all turn green (d) they stay white
14. 14.💧 Which of these does not let water climb? (a) a piece of foil (b) a cotton thread (c) a paper towel (d) a strip of cloth
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) a battery cell (d) a balloon
16. 16.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals are magnetic (d) petals lose water to air
17. 17.True or false: a plastic ruler does not let water climb. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a rubber eraser (b) a strip of cloth (c) a piece of foil (d) a steel spoon
19. 19.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a piece of foil (d) a flower stem
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a glass of water (c) a white flower (d) food colour
21. 21.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
22. 22.⚖️ 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) False (b) True
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) food colour (d) a white flower
24. 24.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a rubber eraser (d) a paper towel
25. 25.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) food colour (d) a magnet
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a glass of water (c) a battery cell (d) a mirror
28. 28.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a plastic ruler (d) a strip of cloth
30. 30.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
31. 31.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
32. 32.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of chalk (c) a rubber eraser (d) a piece of foil
33. 33.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
34. 34.⚖️ 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
35. 35.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) capillary action (d) evaporation
36. 36.True or false: a strip of cloth lets water climb up it. (a) False (b) True
37. 37.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
38. 38.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.⚖️ 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 the one thing we change. (a) True (b) False
40. 40.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed

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