Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 525 · 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.🧺 Which of these is not needed for the water cycle bowl? (a) water (b) a small cup (c) sunlight (d) turmeric powder
2. 2.True or false: a mirror is needed for the paper helicopter. (a) False (b) True
3. 3.🛟 Does a pebble float or sink in water? (a) floats (b) sinks
4. 4.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
5. 5.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) yeast (d) a balloon
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) time to reach the floor (b) the length of the blades (c) the kind of paper
7. 7.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the water layer (c) in the oil layer (d) at the very bottom
8. 8.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a balloon (c) yeast (d) a results table
9. 9.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) the string pulls it (c) escaping air pushes it (d) the straw is heavy
10. 10.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is the one thing we change. (a) True (b) False
11. 11.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a battery cell (c) a magnet (d) a towel for spills
12. 12.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.🔍 Which is the odd one out? (a) a suction hook (b) a vacuum cleaner (c) a medicine dropper (d) a fridge magnet
15. 15.🌈 How many colours do we name in a rainbow (VIBGYOR)?
16. 16.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) turmeric powder (b) a paper clip (c) a ruler (d) a pencil
17. 17.🧺 Do we need a battery cell for the density tower? (a) not needed (b) needed
18. 18.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is the one thing we change. (a) True (b) False
19. 19.True or false: sticky tape is not needed for the balloon rocket. (a) False (b) True
20. 20.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a mirror (c) a long string (d) sticky tape
21. 21.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
22. 22.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it dissolves (c) it sinks (d) it still floats
23. 23.📘 What does “dense” mean? (a) very colourful (b) very thin (c) very hot (d) heavy for its size
24. 24.🧺 Do we need a magnet for the paper helicopter? (a) not needed (b) needed
25. 25.🧺 Which of these is needed for the density tower? (a) a balloon (b) yeast (c) turmeric powder (d) a spoon
26. 26.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it spread in the water (c) it sank as sand (d) it vanished for ever
27. 27.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a magnet (c) a mirror (d) a long string
28. 28.True or false: table salt dissolves in water. (a) False (b) True
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) True (b) False
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) the same string (c) the slope of the string (d) how big we blow it
31. 31.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it does not fall (c) so it gets hot (d) so it turns blue
32. 32.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) True (b) False
33. 33.True or false: a glass marble falls fast through the air. (a) True (b) False
34. 34.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to make it magnetic (b) to make it fall slower (c) to stop the spinning (d) to weigh down the bottom
35. 35.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) stare at the Sun (c) look at it in a mirror (d) look at it through glass
36. 36.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the water turns red (b) more drops form (c) the bowl freezes (d) fewer drops form
37. 37.🧺 Which of these is not needed for the water cycle bowl? (a) cling film (b) water (c) a balloon (d) sunlight
38. 38.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the length of the blades (b) the person dropping (c) the paper clip (d) the drop height
39. 39.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the order of the layers (b) the same glass (c) the order of pouring (d) how much of each liquid
40. 40.True or false: an ice cube is less dense than water. (a) True (b) False

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