Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 300 · 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.True or false: a flower stem lets water climb up it. (a) True (b) False
3. 3.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) capillary action (d) melting
4. 4.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a glass of water (c) a white flower (d) food colour
6. 6.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) it sinks at once (d) nothing ever happens
7. 7.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a piece of foil (c) a glass marble (d) a steel spoon
9. 9.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a few hours of waiting (d) a mirror
11. 11.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the stem turns blue (d) the flower glows
12. 12.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) petals like colour (d) the stem is hot
13. 13.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
14. 14.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
15. 15.True or false: a cotton thread does not let water climb. (a) False (b) True
16. 16.⚖️ 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 what we measure. (a) True (b) False
17. 17.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) food colour (c) a glass of water (d) a white flower
19. 19.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) through the air (d) it rains on them
20. 20.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a plastic ruler (d) a paper towel
21. 21.⚖️ 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) True (b) False
22. 22.True or false: a piece of chalk does not let water climb. (a) False (b) True
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) time for colour to show (b) the amount of colour (c) the kind of flower (d) the amount of water
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a magnet (d) a glass of water
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) turmeric powder (c) a few hours of waiting (d) a balloon
26. 26.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
27. 27.⚖️ 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
28. 28.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) rub your eyes (d) wash your hands
29. 29.⚖️ 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
30. 30.True or false: a cotton thread lets water climb up it. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a glass marble (b) a strip of cloth (c) a rubber eraser (d) a steel spoon
32. 32.🧺 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) turmeric powder (d) food colour
33. 33.True or false: a piece of foil lets water climb up it. (a) False (b) True
34. 34.⚖️ 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 measure it (b) we keep it the same (c) we change it
35. 35.💧 Which of these does not let water climb? (a) a paper towel (b) a flower stem (c) a piece of foil (d) a piece of chalk
36. 36.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a paper towel (d) a strip of cloth
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
38. 38.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
39. 39.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
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 measure it (c) we change it

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