Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 802 · 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.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
2. 2.⚖️ 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 room it stands in (b) the length of the stem (c) time for colour to show (d) the amount of colour
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a mirror (c) a glass of water (d) a white flower
4. 4.⚖️ 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 measure it (c) we change it
5. 5.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
6. 6.⚖️ 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
7. 7.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
9. 9.True or false: a rubber eraser lets water climb up it. (a) False (b) True
10. 10.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
11. 11.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
12. 12.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
13. 13.True or false: a flower stem does not let water climb. (a) False (b) True
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the kind of flower (c) the room it stands in (d) the amount of water
15. 15.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
16. 16.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
17. 17.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the stem turns blue (d) the petals turn red
18. 18.🔮 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 all turn green (c) they stay white (d) they fall off at once
19. 19.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a piece of foil (d) a paper towel
20. 20.True or false: a rubber eraser does not let water climb. (a) True (b) False
21. 21.⚖️ 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
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) a battery cell (d) food colour
23. 23.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
24. 24.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) it rains on them (d) through the air
25. 25.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
26. 26.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the water turns green (d) the petals turn bluish
27. 27.True or false: a piece of foil lets water climb up it. (a) True (b) False
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) a battery cell (d) a balloon
29. 29.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
30. 30.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a flower stem (d) a rubber eraser
31. 31.True or false: a piece of chalk does not let water climb. (a) True (b) False
32. 32.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) a paper towel (b) a piece of chalk (c) a steel spoon (d) a sugar cube
34. 34.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
36. 36.True or false: a flower stem lets water climb up it. (a) True (b) False
37. 37.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
38. 38.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
40. 40.⚖️ 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 what we measure. (a) True (b) False

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