Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 780 · 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.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes
2. 2.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a sugar cube (c) a piece of foil (d) a steel spoon
3. 3.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
4. 4.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
5. 5.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) magnetism (d) capillary action
6. 6.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a steel spoon (d) a flower stem
7. 7.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a steel spoon (d) a strip of cloth
8. 8.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.🧺 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 battery cell (d) a few hours of waiting
10. 10.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a cotton thread (d) a paper towel
11. 11.⚖️ 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 length of the stem (c) the room it stands in
12. 12.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
13. 13.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
14. 14.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the petals turn bluish (d) the flower floats away
15. 15.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
16. 16.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a balloon (d) a white flower
18. 18.True or false: a rubber eraser does not let water climb. (a) True (b) False
19. 19.⚖️ 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 measure it (c) we change it
20. 20.⚖️ 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 room it stands in (b) the amount of colour (c) the amount of water (d) time for colour to show
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) food colour (c) a glass of water (d) a white flower
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.⚖️ 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) the amount of colour (c) time for colour to show
24. 24.True or false: a flower stem lets water climb up it. (a) False (b) True
25. 25.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a plastic ruler (d) a flower stem
26. 26.⚖️ 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 change it (c) we measure it
27. 27.🔍 Which is the odd one out? (a) a steel spoon (b) a strip of cloth (c) a plastic ruler (d) a rubber eraser
28. 28.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a piece of foil (b) a piece of chalk (c) a glass marble (d) a plastic ruler
30. 30.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a piece of foil (d) a cotton thread
31. 31.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
32. 32.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) it sinks at once (d) colour climbs up it
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a white flower (d) yeast
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 keep it the same (b) we change it (c) we measure it
35. 35.True or false: a glass marble does not let water climb. (a) False (b) True
36. 36.⚖️ 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 keep it the same (c) we change it
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) food colour (c) a balloon (d) yeast
38. 38.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
39. 39.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
40. 40.⚖️ 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 room it stands in (c) the amount of colour (d) the kind of flower

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