Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 95 · 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: the kind of flower is what we measure. (a) True (b) False
2. 2.💧 Which of these does not let water climb? (a) a piece of chalk (b) a sugar cube (c) a paper towel (d) a steel spoon
3. 3.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
4. 4.⚖️ 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
5. 5.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a glass marble (d) a sugar cube
6. 6.🔍 Which is the odd one out? (a) a paper towel (b) a piece of chalk (c) a strip of cloth (d) a rubber eraser
7. 7.True or false: a plastic ruler lets water climb up it. (a) False (b) True
8. 8.⚖️ 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) False (b) True
9. 9.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) no colour change (d) the stem turns blue
10. 10.🔍 Which is the odd one out? (a) a strip of cloth (b) a sugar cube (c) a paper towel (d) a piece of foil
11. 11.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
12. 12.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
13. 13.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
14. 14.💧 Which of these does not let water climb? (a) a flower stem (b) a paper towel (c) a strip of cloth (d) a plastic ruler
15. 15.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a balloon (d) food colour
17. 17.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
18. 18.⚖️ 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 measure it (b) we keep it the same (c) we change it
19. 19.True or false: a plastic ruler does not let water climb. (a) True (b) False
20. 20.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a cotton thread (d) a glass marble
21. 21.⚖️ 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) the amount of colour (c) the kind of flower (d) the room it stands in
22. 22.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.⚖️ 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 measure it (b) we change it (c) we keep it the same
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a glass of water (c) a few hours of waiting (d) food colour
25. 25.True or false: a piece of foil lets water climb up it. (a) True (b) False
26. 26.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a steel spoon (d) a cotton thread
28. 28.⚖️ 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 measure it (b) we keep it the same (c) we change it
29. 29.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
30. 30.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
31. 31.True or false: a rubber eraser lets water climb up it. (a) True (b) False
32. 32.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it is sprayed on (c) it rains on them (d) through the air
34. 34.⚖️ 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) True (b) False
35. 35.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) rub your eyes (d) lick your fingers
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a magnet (d) food colour
37. 37.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
38. 38.🔍 Which is the odd one out? (a) a steel spoon (b) a cotton thread (c) a plastic ruler (d) a piece of foil
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a few hours of waiting (c) a white flower (d) food colour
40. 40.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once

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