Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 529 · 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.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
2. 2.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
4. 4.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
6. 6.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a mirror (d) a white flower
7. 7.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a piece of chalk (d) a piece of foil
8. 8.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
9. 9.⚖️ 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 the one thing we change. (a) True (b) False
10. 10.🧺 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 balloon
11. 11.💧 Which of these does not let water climb? (a) a plastic ruler (b) a sugar cube (c) a paper towel (d) a flower stem
12. 12.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
13. 13.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
14. 14.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
15. 15.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
16. 16.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a rubber eraser (d) a flower stem
17. 17.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
18. 18.⚖️ 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
19. 19.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
20. 20.⚖️ 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) True (b) False
21. 21.⚖️ 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 kind of flower (c) the amount of water (d) time for colour to show
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a sugar cube (d) a plastic ruler
24. 24.True or false: a paper towel does not let water climb. (a) False (b) True
25. 25.True or false: a plastic ruler does not let water climb. (a) True (b) False
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a magnet (d) food colour
27. 27.🔍 Which is the odd one out? (a) a plastic ruler (b) a strip of cloth (c) a steel spoon (d) a piece of foil
28. 28.🔍 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 petals turn bluish (d) the flower floats away
29. 29.⚖️ 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 water (b) the length of the stem (c) time for colour to show (d) the amount of colour
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 what we measure. (a) True (b) False
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a magnet (c) a balloon (d) a white flower
32. 32.💧 Which of these does not let water climb? (a) a rubber eraser (b) a piece of chalk (c) a flower stem (d) a sugar cube
33. 33.⚖️ 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 change it (c) we keep it the same
34. 34.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) turmeric powder (d) food colour
36. 36.True or false: a strip of cloth lets water climb up it. (a) False (b) True
37. 37.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
38. 38.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they fall off at once (c) they turn two colours (d) they all turn green
39. 39.⚖️ 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) False (b) True
40. 40.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True

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