Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 533 · 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.🧺 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 battery cell
2. 2.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.⚖️ 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 kind of flower (b) the length of the stem (c) the amount of colour (d) time for colour to show
4. 4.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) a white flower (d) food colour
5. 5.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
6. 6.⚖️ 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 change it (b) we keep it the same (c) we measure it
7. 7.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
8. 8.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
9. 9.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
10. 10.True or false: a plastic ruler does not let water climb. (a) True (b) False
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a glass of water (d) a white flower
12. 12.💧 Which of these does not let water climb? (a) a piece of foil (b) a strip of cloth (c) a paper towel (d) a cotton thread
13. 13.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a plastic ruler (d) a flower stem
14. 14.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
15. 15.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the flower glows (d) the petals turn red
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a glass of water (d) a few hours of waiting
17. 17.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
18. 18.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
19. 19.⚖️ 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
20. 20.⚖️ 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) True (b) False
21. 21.🔍 Which is the odd one out? (a) a strip of cloth (b) a glass marble (c) a piece of chalk (d) a paper towel
22. 22.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) it turns to plastic (d) colour climbs up it
23. 23.⚖️ 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 change it (b) we keep it the same (c) we measure it
24. 24.⚖️ 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 what we measure. (a) True (b) False
25. 25.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
26. 26.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they stay white (d) they fall off at once
27. 27.🔍 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
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 kept the same. (a) True (b) False
29. 29.True or false: a sugar cube lets water climb up it. (a) True (b) False
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a white flower (d) food colour
31. 31.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
32. 32.🔍 Which is the odd one out? (a) a plastic ruler (b) a strip of cloth (c) a paper towel (d) a flower stem
33. 33.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
35. 35.⚖️ 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 change it (b) we measure it (c) we keep it the same
36. 36.True or false: a piece of chalk does not let water climb. (a) True (b) False
37. 37.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a glass of water (c) a magnet (d) a mirror
39. 39.True or false: a glass marble lets water climb up it. (a) True (b) False
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) yeast (c) a glass of water (d) food colour

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