Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 454 · 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 water (b) the length of the stem (c) the kind of flower (d) the amount of colour
2. 2.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
4. 4.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
5. 5.🔍 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
6. 6.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.🧺 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 mirror (d) a glass of water
8. 8.⚖️ 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) True (b) False
9. 9.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
10. 10.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a magnet (c) a few hours of waiting (d) a white flower
11. 11.⚖️ 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 water (b) the amount of colour (c) time for colour to show (d) the length of the stem
12. 12.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the petals turn red (d) the flower glows
13. 13.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a cotton thread (d) a piece of foil
14. 14.True or false: a paper towel lets water climb up it. (a) True (b) False
15. 15.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
16. 16.🔮 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
17. 17.💧 Which of these does not let water climb? (a) a strip of cloth (b) a flower stem (c) a paper towel (d) a glass marble
18. 18.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a flower stem
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) food colour (c) a balloon (d) a mirror
20. 20.🧺 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
21. 21.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) a piece of foil (b) a piece of chalk (c) a sugar cube (d) a strip of cloth
23. 23.⚖️ 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) True (b) False
24. 24.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
25. 25.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
26. 26.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) turmeric powder (c) a mirror (d) a few hours of waiting
28. 28.🔍 Which is the odd one out? (a) a plastic ruler (b) a sugar cube (c) a paper towel (d) a cotton thread
29. 29.⚖️ 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 keep it the same (c) we measure it
30. 30.🔍 Which is the odd one out? (a) a paper towel (b) a glass marble (c) a piece of foil (d) a rubber eraser
31. 31.⚖️ 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 kept the same. (a) False (b) True
32. 32.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
33. 33.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
34. 34.⚖️ 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) the amount of colour (c) time for colour to show
35. 35.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
36. 36.⚖️ 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 measure it (b) we change it (c) we keep it the same
37. 37.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
38. 38.True or false: a strip of cloth lets water climb up it. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of chalk (c) a steel spoon (d) a plastic ruler
40. 40.🔍 Which is the odd one out? (a) a flower stem (b) a strip of cloth (c) a sugar cube (d) a steel spoon

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