Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 435 · 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 is the odd one out? (a) a rubber eraser (b) a flower stem (c) a cotton thread (d) a paper towel
2. 2.True or false: a sugar cube lets water climb up it. (a) True (b) False
3. 3.💧 Which of these does not let water climb? (a) a piece of foil (b) a strip of cloth (c) a flower stem (d) a sugar cube
4. 4.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.⚖️ 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) True (b) False
6. 6.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
7. 7.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through the air (d) through tiny stem tubes
8. 8.⚖️ 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 change it (b) we keep it the same (c) we measure it
9. 9.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a sugar cube (d) a piece of foil
10. 10.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
11. 11.⚖️ 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) True (b) False
12. 12.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
13. 13.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) rub your eyes (d) wash your hands
14. 14.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a flower stem (d) a rubber eraser
15. 15.⚖️ 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 keep it the same (b) we change it (c) we measure it
16. 16.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
17. 17.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of chalk (c) a steel spoon (d) a strip of cloth
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) a glass of water (d) a white flower
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a battery cell (c) a white flower (d) a glass of water
21. 21.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a glass marble (d) a sugar cube
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a white flower (d) a mirror
23. 23.💧 Which of these does not let water climb? (a) a cotton thread (b) a flower stem (c) a paper towel (d) a plastic ruler
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a white flower (c) a few hours of waiting (d) food colour
25. 25.⚖️ 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 room it stands in (b) the length of the stem (c) the kind of flower (d) the amount of water
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 turn two colours (b) they all turn green (c) they stay white (d) they fall off at once
27. 27.⚖️ 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
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) a cotton thread (b) a sugar cube (c) a flower stem (d) a glass marble
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) a glass of water (d) a few hours of waiting
31. 31.⚖️ 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 colour (d) the kind of flower
32. 32.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) magnetism (d) evaporation
33. 33.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the flower glows (d) the petals turn red
34. 34.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
35. 35.True or false: a piece of chalk does not let water climb. (a) True (b) False
36. 36.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the flower floats away (d) the petals turn bluish
37. 37.⚖️ 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
38. 38.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
39. 39.True or false: a glass marble lets water climb up it. (a) True (b) False
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) food colour (c) a battery cell (d) a balloon

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