Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 396 · 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.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a piece of chalk (d) a rubber eraser
2. 2.⚖️ 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) False (b) True
3. 3.True or false: a steel spoon does not let water climb. (a) True (b) False
4. 4.⚖️ 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
5. 5.⚖️ 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 length of the stem (c) the kind of flower (d) time for colour to show
6. 6.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) turmeric powder (d) a white flower
7. 7.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) capillary action (d) melting
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.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) a balloon (d) a few hours of waiting
10. 10.💧 Which of these does not let water climb? (a) a strip of cloth (b) a plastic ruler (c) a piece of chalk (d) a flower stem
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a battery cell (c) a white flower (d) a glass of water
12. 12.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) it rains on them (d) through tiny stem tubes
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a magnet (c) a balloon (d) a battery cell
14. 14.⚖️ 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
15. 15.⚖️ 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) True (b) False
16. 16.⚖️ 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) the room it stands in (c) the length of the stem (d) time for colour to show
17. 17.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
19. 19.💧 Which of these lets water climb up it? (a) a glass marble (b) a cotton thread (c) a plastic ruler (d) a rubber eraser
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
21. 21.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a rubber eraser (c) a steel spoon (d) a plastic ruler
22. 22.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
23. 23.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
24. 24.True or false: a flower stem does not let water climb. (a) True (b) False
25. 25.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) time for colour to show (c) the room it stands in
27. 27.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a glass marble (d) a plastic ruler
28. 28.🔮 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 all turn green (c) they turn two colours (d) they fall off at once
29. 29.🔍 Which is the odd one out? (a) a paper towel (b) a rubber eraser (c) a steel spoon (d) a glass marble
30. 30.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
31. 31.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
32. 32.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
34. 34.🔍 Which is the odd one out? (a) a piece of chalk (b) a piece of foil (c) a flower stem (d) a cotton thread
35. 35.⚖️ 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 keep it the same (b) we measure it (c) we change it
36. 36.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) colour climbs up it (d) it sinks at once
37. 37.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
39. 39.⚖️ 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
40. 40.🧺 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) food colour (d) turmeric powder

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