Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 603 · 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.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a battery cell (d) turmeric powder
3. 3.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
4. 4.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a glass marble (d) a flower stem
5. 5.⚖️ 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 amount of colour (b) the length of the stem (c) time for colour to show
6. 6.💧 Which of these does not let water climb? (a) a flower stem (b) a plastic ruler (c) a paper towel (d) a strip of cloth
7. 7.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) capillary action (d) evaporation
8. 8.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) it turns to plastic (d) nothing ever happens
9. 9.⚖️ 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 keep it the same (b) we change it (c) we measure it
10. 10.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) turmeric powder (d) a few hours of waiting
12. 12.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
13. 13.⚖️ 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 length of the stem (b) time for colour to show (c) the amount of colour (d) the room it stands in
14. 14.💧 Which of these does not let water climb? (a) a sugar cube (b) a cotton thread (c) a glass marble (d) a paper towel
15. 15.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the water turns green (d) the stem turns to ice
16. 16.🔍 Which is the odd one out? (a) a cotton thread (b) a strip of cloth (c) a paper towel (d) a rubber eraser
17. 17.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
18. 18.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
19. 19.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
21. 21.⚖️ 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 kept the same. (a) False (b) True
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) a magnet (d) turmeric powder
23. 23.⚖️ 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 amount of colour (c) the room it stands in (d) the length of the stem
24. 24.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
25. 25.⚖️ 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 measure it (b) we keep it the same (c) we change it
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) food colour (d) a few hours of waiting
27. 27.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
28. 28.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
29. 29.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
30. 30.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
31. 31.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the petals turn red (d) the flower glows
32. 32.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a steel spoon (d) a piece of chalk
34. 34.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.🔍 Which is the odd one out? (a) a sugar cube (b) a strip of cloth (c) a plastic ruler (d) a piece of chalk
36. 36.⚖️ 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
37. 37.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
38. 38.True or false: a piece of foil lets water climb up it. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of chalk (c) a paper towel (d) a piece of foil
40. 40.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True

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