Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 490 · 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.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) sun or shade (b) the time we wait (c) the amount of water (d) the size of the bowl
2. 2.🔮 Predict: you fold the two blades the other way. What changes? (a) it does not fall (b) it turns blue (c) it falls upward (d) it spins the other way
3. 3.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it sinks faster (c) it dissolves (d) it can float
4. 4.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a sundial (c) a fridge magnet (d) a balloon rocket
5. 5.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) sand (d) smoke
6. 6.🥄 Which of these dissolves slower? (a) sugar in icy water (b) sugar stirred well (c) powdered sugar (d) sugar in warm water
7. 7.True or false: a mirror is not needed for the float-or-sink test. (a) False (b) True
8. 8.🚁 Dropped from a raised hand, does a fluff of cotton fall slowly or fast? (a) falls fast (b) falls slowly
9. 9.True or false: sugar stirred well dissolves slower. (a) True (b) False
10. 10.True or false: yeast is not needed for the float-or-sink test. (a) True (b) False
11. 11.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a mirror (b) cooking oil (c) a tall clear glass (d) water with food colour
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) how full the glass is (b) the same glass (c) the way we turn it (d) whether the card stays
13. 13.True or false: a drinking straw works by magnetism. (a) False (b) True
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a suction hook (c) a drinking straw (d) a bicycle pump
16. 16.🛟 Which of these sinks in water? (a) a cork (b) a coin (c) a piece of thermocol (d) an ice-cream stick
17. 17.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water is magnetic (c) hot water can scald (d) hot water is heavy
18. 18.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) a few ice cubes (c) more plain water (d) a little shaking
19. 19.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals are magnetic (d) petals like colour
20. 20.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
21. 21.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) never look at the Sun (d) stare at the Sun
22. 22.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.🚀 Which of these goes forward? (a) the balloon (b) gas from the rocket (c) water a swimmer pushes (d) air from the balloon
24. 24.🧺 Which of these is needed for the density tower? (a) a mirror (b) a balloon (c) yeast (d) water with food colour
25. 25.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
26. 26.True or false: cling film is needed for the water cycle bowl. (a) True (b) False
27. 27.True or false: cling film is not needed for the water cycle bowl. (a) True (b) False
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) how big we blow it (c) distance it travels (d) the slope of the string
29. 29.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
30. 30.🛟 How should you check if the sugar has dissolved? (a) taste it (b) smell it closely (c) look for leftover grains (d) poke it with a finger
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) True (b) False
32. 32.🚁 Which of these falls slowly through the air? (a) a steel spoon (b) a glass marble (c) a stone (d) a fluff of cotton
33. 33.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the size of the bowl (b) the cling film cover (c) the amount of water (d) how many drops form
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) brightness of rainbow (c) the same white paper
35. 35.True or false: a strip of paper is not needed for the paper helicopter. (a) True (b) False
36. 36.🧺 Which of these is needed for the dissolving test? (a) honey (b) two clear glasses (c) a mirror (d) a balloon
37. 37.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) how many drops form (b) sun or shade (c) the amount of water
38. 38.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a strip of paper (c) turmeric powder (d) safety scissors
39. 39.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) snow falling (d) a small rainbow
40. 40.🚁 Dropped from a raised hand, does a glass marble fall slowly or fast? (a) falls slowly (b) falls fast

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