Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 266 · 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) a glass of water (b) food colour (c) a balloon (d) a few hours of waiting
2. 2.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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 length of the stem (b) the kind of flower (c) the amount of colour (d) time for colour to show
4. 4.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) yeast (d) a few hours of waiting
6. 6.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a steel spoon (d) a cotton thread
7. 7.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the stem turns to ice (d) the flower floats away
8. 8.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) turmeric powder (c) a magnet (d) a mirror
10. 10.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
11. 11.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a magnet (d) a few hours of waiting
13. 13.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) no colour change (d) the stem turns blue
14. 14.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they turn two colours (c) they all turn green (d) they stay white
15. 15.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
16. 16.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) petals lose water to air (d) the stem is hot
17. 17.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) a flower stem (b) a cotton thread (c) a plastic ruler (d) a paper towel
19. 19.🧺 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 glass of water (d) a battery cell
20. 20.💧 Which of these does not let water climb? (a) a glass marble (b) a strip of cloth (c) a sugar cube (d) a paper towel
21. 21.⚖️ 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 measure it (c) we keep it the same
22. 22.⚖️ 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 length of the stem (b) the kind of flower (c) time for colour to show
23. 23.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a strip of cloth
24. 24.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
25. 25.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a few hours of waiting (d) a magnet
27. 27.🔍 Which is the odd one out? (a) a piece of chalk (b) a glass marble (c) a cotton thread (d) a paper towel
28. 28.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
29. 29.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
30. 30.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a rubber eraser (d) a piece of chalk
31. 31.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
32. 32.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
34. 34.⚖️ 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 colour (c) time for colour to show (d) the kind of flower
35. 35.⚖️ 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 length of the stem (b) the amount of water (c) time for colour to show
36. 36.⚖️ 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
37. 37.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) wipe them on walls (d) rub your eyes
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.True or false: a piece of chalk does not let water climb. (a) False (b) True
40. 40.True or false: a sugar cube does not let water climb. (a) True (b) False

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