Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 646 · 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.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
2. 2.🧺 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 battery cell
3. 3.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
4. 4.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
5. 5.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
6. 6.🔍 Which is the odd one out? (a) a glass marble (b) a flower stem (c) a plastic ruler (d) a piece of foil
7. 7.⚖️ 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 measure it (c) we change it
8. 8.⚖️ 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
9. 9.🔮 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 fall off at once (c) they all turn green (d) they stay white
10. 10.🧺 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) a white flower (d) a mirror
11. 11.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) yeast (d) food colour
13. 13.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
14. 14.⚖️ 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
15. 15.⚖️ 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) time for colour to show (c) the room it stands in (d) the amount of colour
16. 16.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) the flower glows (d) no colour change
17. 17.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of chalk (c) a piece of foil (d) a flower stem
18. 18.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the stem turns to ice (c) the water turns green (d) the flower floats away
19. 19.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
20. 20.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of chalk (c) a steel spoon (d) a glass marble
21. 21.🔍 Which is the odd one out? (a) a rubber eraser (b) a cotton thread (c) a steel spoon (d) a piece of foil
22. 22.⚖️ 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
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 amount of colour (b) the length of the stem (c) time for colour to show
24. 24.True or false: a sugar cube lets water climb up it. (a) False (b) True
25. 25.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
26. 26.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
27. 27.True or false: a paper towel lets water climb up it. (a) True (b) False
28. 28.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.True or false: a cotton thread lets water climb up it. (a) False (b) True
30. 30.⚖️ 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) True (b) False
31. 31.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) through the air (c) it rains on them (d) it is sprayed on
32. 32.True or false: a piece of chalk lets water climb up it. (a) True (b) False
33. 33.⚖️ 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
34. 34.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of foil (c) a cotton thread (d) a strip of cloth
35. 35.True or false: a strip of cloth does not let water climb. (a) True (b) False
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 change it (b) we keep it the same (c) we measure it
37. 37.⚖️ 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
38. 38.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
39. 39.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) it turns to plastic (d) colour climbs up it
40. 40.💧 Which of these does not let water climb? (a) a cotton thread (b) a paper towel (c) a flower stem (d) a rubber eraser

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