Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 692 · 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 of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a magnet (c) a glass of water (d) food colour
2. 2.⚖️ 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
3. 3.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
4. 4.⚖️ 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 measure it (b) we keep it the same (c) we change it
5. 5.⚖️ 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
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) turmeric powder (c) yeast (d) a balloon
7. 7.⚖️ 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 the one thing we change. (a) True (b) False
8. 8.⚖️ 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 change it (c) we measure it
9. 9.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a sugar cube (d) a rubber eraser
10. 10.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a balloon (d) a glass of water
12. 12.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a toddler (d) a pet
14. 14.⚖️ 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
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a few hours of waiting (d) a mirror
16. 16.⚖️ 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 measure it (b) we keep it the same (c) we change it
17. 17.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
18. 18.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the flower floats away (d) the stem turns to ice
19. 19.🔍 Which is the odd one out? (a) a piece of chalk (b) a plastic ruler (c) a piece of foil (d) a glass marble
20. 20.🔮 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
21. 21.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
22. 22.🌼 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
23. 23.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a strip of cloth (d) a steel spoon
24. 24.🔍 Which is the odd one out? (a) a cotton thread (b) a steel spoon (c) a paper towel (d) a sugar cube
25. 25.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of chalk (c) a plastic ruler (d) a strip of cloth
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) a battery cell
27. 27.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
29. 29.⚖️ 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) the amount of water (c) the room it stands in (d) the kind of flower
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) a mirror (d) food colour
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) a magnet (d) turmeric powder
32. 32.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
33. 33.💧 Which of these does not let water climb? (a) a cotton thread (b) a glass marble (c) a flower stem (d) a piece of chalk
34. 34.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
35. 35.True or false: a rubber eraser lets water climb up it. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a piece of foil (d) a flower stem
37. 37.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
38. 38.⚖️ 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
39. 39.⚖️ 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 change it (c) we measure it
40. 40.True or false: a piece of foil lets water climb up it. (a) False (b) True

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