Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 495 · 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.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) food colour (d) a mirror
2. 2.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
3. 3.True or false: a plastic ruler does not let water climb. (a) False (b) True
4. 4.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) wipe them on walls (d) lick your fingers
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a magnet (d) a glass of water
6. 6.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a battery cell (c) a white flower (d) a few hours of waiting
7. 7.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
8. 8.⚖️ 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 keep it the same (c) we change it
9. 9.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
10. 10.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
11. 11.⚖️ 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 amount of colour
12. 12.💧 Which of these lets water climb up it? (a) a glass marble (b) a strip of cloth (c) a steel spoon (d) a plastic ruler
13. 13.💧 Which of these does not let water climb? (a) a plastic ruler (b) a cotton thread (c) a paper towel (d) a flower stem
14. 14.True or false: a piece of foil lets water climb up it. (a) True (b) False
15. 15.True or false: a cotton thread lets water climb up it. (a) False (b) True
16. 16.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a piece of foil (d) a flower stem
18. 18.⚖️ 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 length of the stem (c) the amount of water (d) the kind of flower
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a mirror (c) a few hours of waiting (d) a magnet
20. 20.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
21. 21.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
23. 23.🔮 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 turn two colours (c) they fall off at once (d) they all turn green
24. 24.💧 Which of these lets water climb up it? (a) a sugar cube (b) a glass marble (c) a piece of foil (d) a rubber eraser
25. 25.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of foil (c) a piece of chalk (d) a strip of cloth
26. 26.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the water turns green (d) the flower floats away
27. 27.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
29. 29.🔮 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
30. 30.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a piece of foil (d) a strip of cloth
31. 31.🔍 Which is the odd one out? (a) a flower stem (b) a plastic ruler (c) a rubber eraser (d) a steel spoon
32. 32.⚖️ 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 room it stands in
33. 33.True or false: a glass marble lets water climb up it. (a) True (b) False
34. 34.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
35. 35.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
36. 36.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
37. 37.⚖️ 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
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the room it stands in (c) the amount of water (d) the amount of colour
39. 39.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
40. 40.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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