Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 996 · 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 of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) a mirror
2. 2.⚖️ 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) False (b) True
3. 3.⚖️ 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 measure it (b) we change it (c) we keep it the same
4. 4.⚖️ 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
5. 5.🔍 Which is the odd one out? (a) a paper towel (b) a piece of chalk (c) a strip of cloth (d) a glass marble
6. 6.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
7. 7.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
8. 8.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands
9. 9.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the water turns green (d) the petals turn bluish
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) a magnet (d) a glass of water
11. 11.💧 Which of these does not let water climb? (a) a plastic ruler (b) a sugar cube (c) a strip of cloth (d) a piece of chalk
12. 12.⚖️ 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 amount of colour (b) the kind of flower (c) the room it stands in (d) time for colour to show
13. 13.⚖️ 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 measure it (b) we change it (c) we keep it the same
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) yeast (d) food colour
15. 15.⚖️ 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
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) the room it stands in (b) time for colour to show (c) the length of the stem
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a magnet (c) food colour (d) a few hours of waiting
18. 18.🧺 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 few hours of waiting
19. 19.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
21. 21.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it sinks at once (d) it turns to plastic
22. 22.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a plastic ruler (d) a strip of cloth
23. 23.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) magnetism (d) evaporation
24. 24.🔮 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 fall off at once (c) they all turn green (d) they stay white
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a magnet (c) turmeric powder (d) yeast
26. 26.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) yeast
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) food colour (d) a magnet
29. 29.True or false: a glass marble lets water climb up it. (a) False (b) True
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
31. 31.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a battery cell (d) food colour
33. 33.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
34. 34.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a magnet (c) a battery cell (d) turmeric powder
35. 35.💧 Which of these does not let water climb? (a) a sugar cube (b) a steel spoon (c) a cotton thread (d) a strip of cloth
36. 36.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
37. 37.⚖️ 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) False (b) True
38. 38.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
39. 39.🔍 Which is the odd one out? (a) a cotton thread (b) a steel spoon (c) a glass marble (d) a plastic ruler
40. 40.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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