Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 715 · 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? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.⚖️ 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) True (b) False
3. 3.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a plastic ruler (d) a cotton thread
4. 4.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a flower stem (c) a plastic ruler (d) a glass marble
5. 5.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
6. 6.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a magnet (d) a white flower
7. 7.True or false: a piece of chalk lets water climb up it. (a) False (b) True
8. 8.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it sinks at once (d) it turns to plastic
9. 9.💧 Which of these does not let water climb? (a) a strip of cloth (b) a plastic ruler (c) a paper towel (d) a sugar cube
10. 10.True or false: a plastic ruler does not let water climb. (a) False (b) True
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) the length of the stem (b) time for colour to show (c) the room it stands in
12. 12.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
13. 13.True or false: a paper towel does not let water climb. (a) True (b) False
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) yeast (d) a white flower
15. 15.True or false: a glass marble does not let water climb. (a) True (b) False
16. 16.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the flower floats away (d) the petals turn bluish
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a magnet (c) yeast (d) a battery cell
18. 18.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
19. 19.⚖️ 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 kept the same. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) a piece of foil (b) a glass marble (c) a plastic ruler (d) a strip of cloth
21. 21.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a steel spoon (d) a cotton thread
22. 22.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
23. 23.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
24. 24.🔍 Which is the odd one out? (a) a plastic ruler (b) a flower stem (c) a steel spoon (d) a glass marble
25. 25.⚖️ 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) time for colour to show (b) the room it stands in (c) the kind of flower (d) the length of the stem
26. 26.🧺 Do we need a few hours of waiting 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? What do we do with “the room it stands in”? (a) we keep it the same (b) we change it (c) we measure it
28. 28.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) food colour (d) turmeric powder
30. 30.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
31. 31.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the flower glows (d) the petals turn red
32. 32.💧 Which of these does not let water climb? (a) a glass marble (b) a paper towel (c) a flower stem (d) a cotton thread
33. 33.True or false: a piece of chalk does not let water climb. (a) True (b) False
34. 34.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
36. 36.🧺 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) a battery cell
37. 37.🧺 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 mirror
38. 38.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
39. 39.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
40. 40.🔍 Which is the odd one out? (a) a rubber eraser (b) a flower stem (c) a sugar cube (d) a piece of chalk

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