Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 408 · 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 the one thing we change? (a) the amount of colour (b) the length of the stem (c) the amount of water (d) the kind of flower
2. 2.True or false: a glass marble does not let water climb. (a) True (b) False
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) yeast (d) a balloon
4. 4.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the stem turns to ice (d) the water turns green
5. 5.True or false: a sugar cube lets water climb up it. (a) True (b) False
6. 6.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) lick your fingers (d) wash your hands
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a glass of water (d) a white flower
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a magnet (c) a few hours of waiting (d) food colour
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) food colour (c) a white flower (d) a glass of water
10. 10.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a balloon (d) a white flower
11. 11.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
12. 12.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a battery cell (d) a few hours of waiting
14. 14.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
15. 15.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
16. 16.⚖️ 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 amount of water (c) the length of the stem
17. 17.⚖️ 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 the one thing we change. (a) False (b) True
18. 18.True or false: a piece of chalk does not let water climb. (a) True (b) False
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) False (b) True
20. 20.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they fall off at once (d) they stay white
21. 21.True or false: a steel spoon does not let water climb. (a) False (b) True
22. 22.⚖️ 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
23. 23.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a battery cell (c) a white flower (d) a few hours of waiting
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a magnet (c) yeast (d) a mirror
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a few hours of waiting (d) a white flower
27. 27.💧 Which of these does not let water climb? (a) a sugar cube (b) a strip of cloth (c) a piece of foil (d) a flower stem
28. 28.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a rubber eraser (d) a piece of foil
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a glass of water (c) a magnet (d) turmeric powder
30. 30.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
31. 31.💧 Which of these lets water climb up it? (a) a piece of foil (b) a strip of cloth (c) a glass marble (d) a rubber eraser
32. 32.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
33. 33.🌼 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
34. 34.True or false: a piece of chalk lets water climb up it. (a) True (b) False
35. 35.True or false: a flower stem lets water climb up it. (a) True (b) False
36. 36.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) melting (d) evaporation
37. 37.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.⚖️ 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 kind of flower
39. 39.⚖️ 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 room it stands in (b) the kind of flower (c) time for colour to show (d) the length of the stem
40. 40.⚖️ 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

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