Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 389 · 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) rub your eyes (b) wash your hands (c) wipe them on walls (d) lick your fingers
2. 2.True or false: a plastic ruler does not let water climb. (a) True (b) False
3. 3.🧺 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) a few hours of waiting (d) a balloon
4. 4.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) nothing ever happens (d) it sinks at once
5. 5.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
6. 6.🔍 Which is the odd one out? (a) a piece of chalk (b) a sugar cube (c) a strip of cloth (d) a rubber eraser
7. 7.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
9. 9.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a battery cell (c) a glass of water (d) a balloon
11. 11.⚖️ 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
12. 12.⚖️ 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 keep it the same (b) we change it (c) we measure it
13. 13.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a battery cell (d) a few hours of waiting
15. 15.⚖️ 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
16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a few hours of waiting (c) a balloon (d) a magnet
17. 17.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a sugar cube (d) a piece of foil
18. 18.⚖️ 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
19. 19.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a cotton thread (d) a glass marble
21. 21.🧺 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 battery cell (d) food colour
22. 22.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
23. 23.True or false: a flower stem does not let water climb. (a) True (b) False
24. 24.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the petals turn red (d) the stem turns blue
25. 25.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.⚖️ 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) False (b) True
27. 27.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
28. 28.⚖️ 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 measure it (b) we change it (c) we keep it the same
29. 29.💧 Which of these does not let water climb? (a) a paper towel (b) a steel spoon (c) a cotton thread (d) a piece of chalk
30. 30.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a mirror (c) food colour (d) a white flower
32. 32.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they stay white (c) they all turn green (d) they fall off at once
33. 33.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
34. 34.🧺 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) food colour (d) a magnet
35. 35.⚖️ 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
36. 36.⚖️ 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 room it stands in (c) time for colour to show
37. 37.True or false: a flower stem lets water climb up it. (a) True (b) False
38. 38.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the water turns green (d) the stem turns to ice
39. 39.True or false: a paper towel does not let water climb. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) a piece of chalk (b) a sugar cube (c) a steel spoon (d) a paper towel

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