Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 157 · 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 needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) a balloon (d) a battery cell
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a battery cell (c) a mirror (d) yeast
3. 3.⚖️ 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 change it (b) we measure it (c) we keep it the same
4. 4.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
5. 5.🔍 Which is the odd one out? (a) a cotton thread (b) a rubber eraser (c) a piece of foil (d) a plastic ruler
6. 6.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a plastic ruler (d) a paper towel
8. 8.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
9. 9.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) nothing ever happens (d) it sinks at once
10. 10.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
11. 11.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) the petals turn red (d) no colour change
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a battery cell (d) food colour
13. 13.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the petals turn bluish (d) the stem turns to ice
14. 14.🧺 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) yeast (d) a glass of water
15. 15.⚖️ 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 measure it (b) we change it (c) we keep it the same
16. 16.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
17. 17.⚖️ 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 kind of flower (c) the room it stands in (d) time for colour to show
18. 18.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
19. 19.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.⚖️ 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
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 colour”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.True or false: a paper towel lets water climb up it. (a) True (b) False
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) a mirror (d) a magnet
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a magnet (c) food colour (d) a few hours of waiting
25. 25.⚖️ 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
26. 26.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a balloon (d) a few hours of waiting
28. 28.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) wash your hands (d) rub your eyes
29. 29.True or false: a plastic ruler does not let water climb. (a) True (b) False
30. 30.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a few hours of waiting (d) a mirror
32. 32.⚖️ 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 kept the same. (a) False (b) True
33. 33.True or false: a paper towel does not let water climb. (a) False (b) True
34. 34.⚖️ 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 kind of flower (b) time for colour to show (c) the length of the stem
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) a glass of water (d) food colour
36. 36.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of water (b) time for colour to show (c) the room it stands in (d) the kind of flower
39. 39.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
40. 40.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False

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