Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 539 · 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 glass marble (c) a plastic ruler (d) a sugar cube
2. 2.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
3. 3.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
5. 5.⚖️ 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 kind of flower (b) the room it stands in (c) the length of the stem (d) the amount of colour
6. 6.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
7. 7.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.🔍 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
9. 9.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
10. 10.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
11. 11.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
12. 12.True or false: a plastic ruler does not let water climb. (a) False (b) True
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a white flower (c) a few hours of waiting (d) a glass of water
14. 14.⚖️ 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
15. 15.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a plastic ruler (d) a piece of foil
16. 16.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
17. 17.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
18. 18.⚖️ 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 change it (c) we keep it the same
19. 19.🔮 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 all turn green (c) they turn two colours (d) they fall off at once
20. 20.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
21. 21.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
22. 22.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) it sinks at once (d) nothing ever happens
23. 23.True or false: a strip of cloth lets water climb up it. (a) False (b) True
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a magnet (d) a white flower
25. 25.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a flower stem (d) a rubber eraser
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a few hours of waiting (c) food colour (d) a white flower
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) yeast (d) a white flower
29. 29.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a strip of cloth (c) a glass marble (d) a plastic ruler
30. 30.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show
31. 31.True or false: a rubber eraser does not let water climb. (a) True (b) False
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) turmeric powder (c) a battery cell (d) a few hours of waiting
33. 33.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
34. 34.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
35. 35.True or false: a flower stem does not let water climb. (a) False (b) True
36. 36.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
37. 37.💧 Which of these does not let water climb? (a) a sugar cube (b) a flower stem (c) a cotton thread (d) a rubber eraser
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) the length of the stem (b) the kind of flower (c) time for colour to show (d) the amount of water
39. 39.True or false: a steel spoon does not let water climb. (a) True (b) False
40. 40.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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