Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 291 · 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.⚖️ 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) time for colour to show (c) the amount of water
2. 2.⚖️ 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 measure it (b) we keep it the same (c) we change it
3. 3.🔮 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 stay white (c) they all turn green (d) they fall off at once
4. 4.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) a piece of chalk (b) a strip of cloth (c) a paper towel (d) a rubber eraser
6. 6.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
7. 7.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
8. 8.🔍 Which is the odd one out? (a) a plastic ruler (b) a cotton thread (c) a paper towel (d) a piece of chalk
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a mirror (c) food colour (d) a glass of water
10. 10.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
11. 11.⚖️ 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) False (b) True
12. 12.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) through the air (c) it is sprayed on (d) it rains on them
13. 13.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
14. 14.⚖️ 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 room it stands in
15. 15.⚖️ 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 change it (b) we keep it the same (c) we measure it
16. 16.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
19. 19.True or false: a flower stem lets water climb up it. (a) True (b) False
20. 20.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
21. 21.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) a balloon (d) food colour
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a battery cell (c) a magnet (d) a mirror
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) the length of the stem (b) time for colour to show (c) the room it stands in
25. 25.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.🔮 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
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) yeast (d) a few hours of waiting
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) turmeric powder (d) a few hours of waiting
29. 29.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a glass marble (d) a paper towel
30. 30.🧺 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 white flower
31. 31.🧺 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 white flower (d) a mirror
32. 32.🔍 Which is the odd one out? (a) a piece of chalk (b) a cotton thread (c) a sugar cube (d) a glass marble
33. 33.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) the petals turn red (d) no colour change
35. 35.💧 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
36. 36.True or false: a strip of cloth does not let water climb. (a) False (b) True
37. 37.True or false: a rubber eraser lets water climb up it. (a) False (b) True
38. 38.🧺 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
39. 39.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
40. 40.⚖️ 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 kind of flower (c) the amount of colour (d) the room it stands in

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