Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 370 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a balloon (d) food colour
2. 2.⚖️ 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 measure it (c) we keep it the same
3. 3.⚖️ 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
4. 4.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.⚖️ 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 keep it the same (b) we change it (c) we measure it
6. 6.⚖️ 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 length of the stem (c) the room it stands in (d) time for colour to show
7. 7.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) yeast (d) food colour
9. 9.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the flower floats away (d) the petals turn bluish
10. 10.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
11. 11.🛟 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
12. 12.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) through the air (c) it rains on them (d) it is sprayed on
13. 13.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a steel spoon (d) a sugar cube
15. 15.🔮 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
16. 16.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a glass marble (d) a cotton thread
18. 18.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a piece of chalk (d) a rubber eraser
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) a balloon (d) a glass of water
20. 20.⚖️ 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
21. 21.⚖️ 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 length of the stem (c) the amount of colour
22. 22.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a magnet (d) food colour
24. 24.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
25. 25.⚖️ 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
26. 26.True or false: a steel spoon does not let water climb. (a) False (b) True
27. 27.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) evaporation (d) melting
28. 28.💧 Which of these does not let water climb? (a) a flower stem (b) a strip of cloth (c) a glass marble (d) a sugar cube
29. 29.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
30. 30.⚖️ 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 keep it the same (c) we change it
31. 31.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
32. 32.💧 Which of these does not let water climb? (a) a plastic ruler (b) a cotton thread (c) a piece of chalk (d) a paper towel
33. 33.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a piece of foil (d) a cotton thread
35. 35.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
36. 36.True or false: a glass marble lets water climb up it. (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 water is kept the same. (a) True (b) False
38. 38.⚖️ 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) False (b) True
39. 39.💧 Which of these does not let water climb? (a) a rubber eraser (b) a cotton thread (c) a flower stem (d) a strip of cloth
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) a mirror (d) a balloon

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