Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 490 · 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 needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) yeast (d) a magnet
2. 2.🧺 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
3. 3.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
4. 4.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
5. 5.True or false: a rubber eraser lets water climb up it. (a) True (b) False
6. 6.🧺 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 magnet (d) a few hours of waiting
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a white flower (c) a glass of water (d) a few hours of waiting
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 the one thing we change. (a) False (b) True
9. 9.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
10. 10.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) food colour (d) a white flower
11. 11.True or false: a cotton thread does not let water climb. (a) False (b) True
12. 12.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
13. 13.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
14. 14.🔍 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 petals turn bluish (d) the flower floats away
15. 15.💧 Which of these lets water climb up it? (a) a glass marble (b) a paper towel (c) a piece of foil (d) a rubber eraser
16. 16.⚖️ 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
17. 17.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
19. 19.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
20. 20.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they turn two colours (c) they all turn green (d) they stay white
21. 21.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) a balloon (d) a white flower
23. 23.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of foil (c) a piece of chalk (d) a flower stem
24. 24.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
25. 25.⚖️ 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
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.True or false: a piece of foil lets water climb up it. (a) False (b) True
28. 28.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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 amount of water (b) the length of the stem (c) time for colour to show (d) the room it stands in
30. 30.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a rubber eraser (d) a flower stem
31. 31.⚖️ 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
32. 32.⚖️ 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 kept the same. (a) False (b) True
33. 33.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
34. 34.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
35. 35.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
36. 36.⚖️ 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 measure it (b) we keep it the same (c) we change it
37. 37.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) turmeric powder (d) a few hours of waiting
39. 39.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a cotton thread (d) a glass marble
40. 40.💧 Which of these lets water climb up it? (a) a cotton thread (b) a steel spoon (c) a plastic ruler (d) a piece of foil

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