Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 31 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.🚁 What does the paper helicopter do as it falls? (a) it flies upward (b) it spins round (c) it stays still in air (d) it turns into a ball
2. 2.🧺 Which of these is needed for the density tower? (a) a mirror (b) a balloon (c) cooking oil (d) yeast
3. 3.🧺 Which of these is needed for the density tower? (a) yeast (b) a magnet (c) honey (d) a balloon
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) False (b) True
5. 5.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) rub your eyes (d) lick your fingers
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) food colour (d) turmeric powder
7. 7.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a teaspoon (c) warm water (d) a comb
8. 8.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) a magnet pulls it (c) the straw is heavy (d) escaping air pushes it
9. 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) False (b) True
10. 10.True or false: ice cubes is not needed for the water cycle bowl. (a) False (b) True
11. 11.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) bright sunlight (c) a battery cell (d) a balloon
12. 12.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) it sinks at once (d) nothing ever happens
13. 13.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
14. 14.True or false: a tub of water is not needed for the float-or-sink test. (a) False (b) True
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) False (b) True
16. 16.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls fast (b) falls slowly
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) bright sunlight (d) a sheet of white paper
19. 19.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we keep it the same (b) we measure it (c) we change it
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the amount of clay
21. 21.🚁 Dropped from a raised hand, does a coin fall slowly or fast? (a) falls fast (b) falls slowly
22. 22.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
23. 23.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.🧺 Which of these is needed for the paper helicopter? (a) yeast (b) turmeric powder (c) a paper clip (d) a magnet
25. 25.🧺 Do we need ice cubes for the water cycle bowl? (a) needed (b) not needed
26. 26.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a strip of paper (c) a paper clip (d) yeast
27. 27.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is kept the same. (a) True (b) False
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 kind of flower (b) the length of the stem (c) the room it stands in (d) time for colour to show
30. 30.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
31. 31.🚀 Which of these goes backward? (a) the balloon (b) the rocket (c) the rowing boat (d) water from the oars
32. 32.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) pour it on the floor (c) taste each layer (d) throw the glass
33. 33.True or false: snow turning to water is evaporation. (a) False (b) True
34. 34.🧺 Which of these is not needed for the water cycle bowl? (a) cling film (b) a mirror (c) water (d) a big bowl
35. 35.🔮 Predict: you fold the two blades the other way. What changes? (a) it falls upward (b) it turns blue (c) it does not fall (d) it spins the other way
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is what we measure. (a) True (b) False
37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the kind of sugar (b) the water temperature (c) time to dissolve (d) the stirring
38. 38.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a mirror (c) a paper clip (d) safety scissors
39. 39.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a towel for spills (d) a balloon
40. 40.🎈 What is the job of the straw on the string? (a) it holds water (b) it makes it heavier (c) it guides the balloon (d) it blows air in

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