Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 948 · 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.🔍 Which is the odd one out? (a) a steel spoon (b) a rubber eraser (c) a glass marble (d) a flower stem
2. 2.⚖️ 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 measure it (c) we change it
3. 3.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) the petals turn red (d) no colour change
4. 4.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
5. 5.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
6. 6.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
7. 7.🔍 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
8. 8.💧 Which of these does not let water climb? (a) a rubber eraser (b) a sugar cube (c) a paper towel (d) a flower stem
9. 9.True or false: a flower stem does not let water climb. (a) False (b) True
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) yeast (d) a glass of water
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) turmeric powder (c) a white flower (d) food colour
12. 12.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
13. 13.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) food colour (c) a balloon (d) a magnet
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a magnet (c) a glass of water (d) food colour
16. 16.⚖️ 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
17. 17.⚖️ 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 amount of colour (c) the amount of water (d) the room it stands in
18. 18.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.⚖️ 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) True (b) False
20. 20.💧 Which of these does not let water climb? (a) a strip of cloth (b) a plastic ruler (c) a piece of chalk (d) a cotton thread
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a magnet (d) a white flower
22. 22.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) turmeric powder (d) a balloon
24. 24.🔍 Which is the odd one out? (a) a paper towel (b) a steel spoon (c) a glass marble (d) a rubber eraser
25. 25.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
26. 26.⚖️ 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
27. 27.💧 Which of these does not let water climb? (a) a piece of chalk (b) a piece of foil (c) a paper towel (d) a flower stem
28. 28.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a glass of water (d) a white flower
30. 30.🔮 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 fall off at once (d) they turn two colours
31. 31.💧 Which of these lets water climb up it? (a) a paper towel (b) a glass marble (c) a plastic ruler (d) a rubber eraser
32. 32.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
33. 33.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a glass of water (d) a white flower
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is kept the same. (a) True (b) False
36. 36.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
37. 37.⚖️ 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 measure it (b) we keep it the same (c) we change it
38. 38.💧 Which of these does not let water climb? (a) a glass marble (b) a strip of cloth (c) a piece of chalk (d) a cotton thread
39. 39.⚖️ 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 amount of water (c) the length of the stem (d) the kind of flower
40. 40.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False

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