Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 167 · 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 battery cell for the coloured flower experiment? (a) not needed (b) needed
2. 2.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
3. 3.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red
4. 4.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) yeast (c) a few hours of waiting (d) a white flower
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) a mirror (d) a few hours of waiting
7. 7.True or false: a rubber eraser lets water climb up it. (a) False (b) True
8. 8.⚖️ 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 keep it the same (c) we change it
9. 9.⚖️ 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 length of the stem (d) the amount of water
10. 10.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
11. 11.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
12. 12.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) it sinks at once (d) nothing ever happens
14. 14.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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) True (b) False
16. 16.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the flower floats away (d) the petals turn bluish
17. 17.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) food colour (c) a glass of water (d) a white flower
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a glass of water (c) food colour (d) a white flower
20. 20.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
21. 21.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they turn two colours (d) they fall off at once
22. 22.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
23. 23.⚖️ 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 amount of water (b) time for colour to show (c) the length of the stem (d) the kind of flower
24. 24.⚖️ 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 keep it the same (b) we measure it (c) we change it
25. 25.💧 Which of these does not let water climb? (a) a plastic ruler (b) a paper towel (c) a sugar cube (d) a cotton thread
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a battery cell (d) a white flower
27. 27.True or false: a cotton thread does not let water climb. (a) True (b) False
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) False (b) True
29. 29.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a sugar cube (d) a steel spoon
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.True or false: a steel spoon lets water climb up it. (a) False (b) True
32. 32.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
33. 33.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
34. 34.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
35. 35.True or false: a flower stem does not let water climb. (a) False (b) True
36. 36.🧺 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) a white flower (d) turmeric powder
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a balloon (c) a magnet (d) turmeric powder
38. 38.⚖️ 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) False (b) True
39. 39.💧 Which of these lets water climb up it? (a) a paper towel (b) a rubber eraser (c) a steel spoon (d) a plastic ruler
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) False (b) True

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