Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 433 · 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? True or false: the kind of flower is kept the same. (a) True (b) False
2. 2.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
3. 3.⚖️ 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
4. 4.💧 Which of these lets water climb up it? (a) a piece of foil (b) a cotton thread (c) a glass marble (d) a steel spoon
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 room it stands in (b) the length of the stem (c) the kind of flower (d) time for colour to show
6. 6.True or false: a paper towel lets water climb up it. (a) True (b) False
7. 7.⚖️ 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 change it (b) we keep it the same (c) we measure it
8. 8.💧 Which of these does not let water climb? (a) a paper towel (b) a flower stem (c) a plastic ruler (d) a sugar cube
9. 9.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
10. 10.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a rubber eraser (d) a piece of chalk
11. 11.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a steel spoon (d) a strip of cloth
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
13. 13.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a white flower (d) a battery cell
15. 15.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
17. 17.True or false: yeast is 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? True or false: the room it stands in is what we measure. (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 length of the stem is the one thing we change. (a) False (b) True
20. 20.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
21. 21.⚖️ 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
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) a mirror
23. 23.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
24. 24.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a paper towel (d) a rubber eraser
25. 25.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
26. 26.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
27. 27.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) a toddler (d) anyone, without looking
28. 28.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
29. 29.⚖️ 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 amount of colour (c) time for colour to show (d) the amount of water
30. 30.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) evaporation (d) melting
31. 31.⚖️ 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 measure it (b) we change it (c) we keep it the same
32. 32.🔍 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
33. 33.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
34. 34.True or false: a cotton thread does not let water climb. (a) True (b) False
35. 35.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
36. 36.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) nothing ever happens (d) colour climbs up it
37. 37.True or false: a glass marble lets water climb up it. (a) False (b) True
38. 38.💧 Which of these does not let water climb? (a) a sugar cube (b) a cotton thread (c) a rubber eraser (d) a piece of chalk
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) yeast (d) a white flower
40. 40.⚖️ 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 keep it the same (b) we measure it (c) we change it

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