Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 968 · 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.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it sinks at once (d) it turns to plastic
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 glass marble 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) False (b) True
5. 5.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) food colour (d) a few hours of waiting
6. 6.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
7. 7.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the stem turns to ice (d) the petals turn bluish
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a few hours of waiting (d) a battery cell
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) food colour (d) a white flower
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) the kind of flower (b) the length of the stem (c) time for colour to show
11. 11.🧺 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 white flower (d) a magnet
12. 12.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) through the air (d) it is sprayed on
13. 13.⚖️ 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 length of the stem (b) time for colour to show (c) the room it stands in (d) the amount of colour
14. 14.💧 Which of these does not let water climb? (a) a piece of foil (b) a paper towel (c) a flower stem (d) a piece of chalk
15. 15.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
16. 16.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a cotton thread (d) a rubber eraser
18. 18.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
19. 19.True or false: a cotton thread does not let water climb. (a) False (b) True
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) yeast (d) a few hours of waiting
21. 21.⚖️ 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 amount of water
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a few hours of waiting (d) turmeric powder
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a battery cell (d) a mirror
25. 25.True or false: a paper towel does not let water climb. (a) True (b) False
26. 26.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
27. 27.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.True or false: a sugar cube lets water climb up it. (a) False (b) True
29. 29.True or false: a steel spoon lets water climb up it. (a) True (b) False
30. 30.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
31. 31.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a toddler (d) a pet
32. 32.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) wipe them on walls (d) rub your eyes
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) a mirror (d) food colour
34. 34.True or false: a plastic ruler does not let water climb. (a) False (b) True
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a mirror (d) a magnet
36. 36.⚖️ 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 change it (c) we keep it the same
37. 37.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
38. 38.⚖️ 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 amount of colour
39. 39.💧 Which of these does not let water climb? (a) a steel spoon (b) a piece of chalk (c) a strip of cloth (d) a sugar cube
40. 40.🔍 Which is the odd one out? (a) a cotton thread (b) a glass marble (c) a rubber eraser (d) a plastic ruler

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