Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 271 · 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.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
2. 2.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) food colour (c) a glass of water (d) a few hours of waiting
3. 3.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) through tiny stem tubes (d) it is sprayed on
4. 4.True or false: a rubber eraser does not let water climb. (a) True (b) False
5. 5.True or false: a paper towel does not let water climb. (a) True (b) False
6. 6.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
7. 7.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.⚖️ 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
9. 9.⚖️ 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 the one thing we change. (a) False (b) True
10. 10.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
11. 11.True or false: a flower stem does not let water climb. (a) True (b) False
12. 12.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
13. 13.🔍 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
14. 14.⚖️ 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 measure it (c) we keep it the same
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) False (b) True
16. 16.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
17. 17.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.⚖️ 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 measure it (c) we keep it the same
19. 19.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.🔍 Which is the odd one out? (a) a sugar cube (b) a paper towel (c) a cotton thread (d) a piece of foil
21. 21.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
22. 22.True or false: a glass marble does not let water climb. (a) True (b) False
23. 23.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
24. 24.⚖️ 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 kind of flower (b) time for colour to show (c) the amount of water (d) the room it stands in
25. 25.🔮 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 fall off at once (c) they all turn green (d) they turn two colours
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a magnet (d) a white flower
27. 27.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a mirror (d) a white flower
29. 29.⚖️ 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
30. 30.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
31. 31.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a steel spoon (d) a sugar cube
32. 32.⚖️ 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) True (b) False
33. 33.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
34. 34.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a glass of water (c) a magnet (d) a mirror
36. 36.⚖️ 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 length of the stem (b) time for colour to show (c) the amount of water (d) the room it stands in
37. 37.⚖️ 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 change it (c) we keep it the same
38. 38.🔍 Which is the odd one out? (a) a plastic ruler (b) a strip of cloth (c) a cotton thread (d) a piece of chalk
39. 39.⚖️ 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 change it (b) we keep it the same (c) we measure it
40. 40.💧 Which of these does not let water climb? (a) a strip of cloth (b) a cotton thread (c) a sugar cube (d) a plastic ruler

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