Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 813 · 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.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) it sinks at once (d) colour climbs up it
2. 2.⚖️ 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 what we measure. (a) False (b) True
3. 3.⚖️ 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
4. 4.⚖️ 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) time for colour to show (b) the amount of water (c) the length of the stem (d) the amount of colour
5. 5.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a steel spoon (d) a sugar cube
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a magnet (d) a white flower
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a glass of water (d) a magnet
8. 8.⚖️ 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 amount of colour
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a white flower (d) turmeric powder
10. 10.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a cotton thread (c) a glass marble (d) a plastic ruler
11. 11.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (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 few hours of waiting (d) a mirror
13. 13.🔍 Which is the odd one out? (a) a cotton thread (b) a strip of cloth (c) a rubber eraser (d) a piece of chalk
14. 14.⚖️ 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 measure it (b) we change it (c) we keep it the same
15. 15.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) rub your eyes (d) lick your fingers
16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) a battery cell (d) food colour
17. 17.⚖️ 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
18. 18.True or false: a paper towel does not let water climb. (a) False (b) True
19. 19.⚖️ 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 amount of water (c) the length of the stem
20. 20.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
21. 21.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
22. 22.🔍 Which is the odd one out? (a) a cotton thread (b) a strip of cloth (c) a sugar cube (d) a glass marble
23. 23.⚖️ 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
24. 24.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of chalk (c) a piece of foil (d) a rubber eraser
25. 25.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the water turns green (d) the petals turn bluish
26. 26.True or false: a strip of cloth lets water climb up it. (a) False (b) True
27. 27.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
28. 28.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) evaporation (d) melting
29. 29.🔮 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
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) False (b) True
31. 31.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
32. 32.⚖️ 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) False (b) True
33. 33.💧 Which of these does not let water climb? (a) a cotton thread (b) a paper towel (c) a piece of foil (d) a flower stem
34. 34.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.⚖️ 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 measure it (b) we keep it the same (c) we change it
36. 36.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a glass marble (d) a cotton thread
37. 37.💧 Which of these does not let water climb? (a) a piece of chalk (b) a plastic ruler (c) a cotton thread (d) a strip of cloth
38. 38.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
39. 39.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
40. 40.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed

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