Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 688 · 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.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) petals like colour (d) the stem is hot
2. 2.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a rubber eraser (d) a paper towel
3. 3.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) a pet (d) anyone, without looking
4. 4.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) turmeric powder (d) food colour
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a battery cell (d) a glass of water
6. 6.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
7. 7.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
8. 8.💧 Which of these does not let water climb? (a) a sugar cube (b) a strip of cloth (c) a plastic ruler (d) a paper towel
9. 9.True or false: a cotton thread does not let water climb. (a) True (b) False
10. 10.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a few hours of waiting (d) a glass of water
12. 12.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red
13. 13.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a rubber eraser (d) a steel spoon
16. 16.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
17. 17.True or false: a balloon 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 stem turns to ice (d) the flower floats away
19. 19.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a flower stem
21. 21.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
22. 22.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) colour climbs up it (d) it sinks at once
23. 23.⚖️ 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 amount of colour (b) the length of the stem (c) time for colour to show (d) the kind of flower
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the kind of flower
25. 25.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a rubber eraser (d) a cotton thread
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 fall off at once (b) they turn two colours (c) they stay white (d) they all turn green
27. 27.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) magnetism (d) evaporation
28. 28.💧 Which of these lets water climb up it? (a) a glass marble (b) a paper towel (c) a rubber eraser (d) a plastic ruler
29. 29.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
30. 30.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
31. 31.🔍 Which is the odd one out? (a) a strip of cloth (b) a sugar cube (c) a flower stem (d) a plastic ruler
32. 32.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
33. 33.⚖️ 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 colour (b) the length of the stem (c) the kind of flower (d) time for colour to show
34. 34.💧 Which of these does not let water climb? (a) a steel spoon (b) a strip of cloth (c) a cotton thread (d) a paper towel
35. 35.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
36. 36.🔍 Which is the odd one out? (a) a sugar cube (b) a flower stem (c) a steel spoon (d) a strip of cloth
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 water”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a rubber eraser (d) a glass marble
39. 39.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
40. 40.⚖️ 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

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