Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 271 · 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 float-or-sink test? (a) a towel for spills (b) a battery cell (c) small test objects (d) a tub of water
2. 2.True or false: a dry leaf floats on water. (a) False (b) True
3. 3.⚖️ 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 water (c) time for colour to show
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is kept the same. (a) False (b) True
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a battery cell (c) a glass of water (d) a magnet
6. 6.⚖️ 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 cling film cover (b) the time we wait (c) how many drops form (d) the size of the bowl
7. 7.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) run around the tub (c) leave water on the floor (d) play near a deep pond
8. 8.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
10. 10.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the sugar turns to salt (b) all of it dissolves (c) some stays undissolved (d) the water turns solid
11. 11.🧺 Do we need two chairs for the balloon rocket? (a) not needed (b) needed
12. 12.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) oil makes it rain (c) oil turns into honey (d) spilled oil is slippery
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same glass (b) the same white paper (c) brightness of rainbow (d) the amount of water
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sunny window (c) a clear glass of water (d) bright sunlight
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) a magnet (d) a sunny window
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.⚖️ 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
18. 18.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a mirror (c) a tub of water (d) small test objects
19. 19.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to splash everyone (c) to hide the corks (d) to keep children safe
20. 20.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.🧺 Which of these is not needed for the water cycle bowl? (a) sunlight (b) a magnet (c) cling film (d) a big bowl
22. 22.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) put string round a neck (c) keep it away from faces (d) blow it till it bursts
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) turmeric powder (d) a battery cell
24. 24.💧 Which of these is melting? (a) a pond icing over (b) ice becoming water (c) a misty bathroom mirror (d) a puddle drying up
25. 25.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) water (c) a mirror (d) ice cubes
26. 26.True or false: a cotton thread does not let water climb. (a) False (b) True
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we keep it the same (b) we change it (c) we measure it
28. 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is what we measure. (a) False (b) True
29. 29.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
30. 30.⚖️ 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 same three liquids (b) the order of the layers (c) how much of each liquid (d) the order of pouring
31. 31.🔍 Which is the odd one out? (a) an ice cube (b) a steel spoon (c) a ping-pong ball (d) a cork
32. 32.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a magnet (c) a balloon (d) a battery cell
33. 33.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) True (b) False
35. 35.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) small test objects (d) a magnet
36. 36.True or false: drops under a pot lid is condensation. (a) True (b) False
37. 37.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) a battery cell (c) water with food colour (d) a spoon
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we measure it (c) we change it
39. 39.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to catch any spills (d) to cool the glass
40. 40.True or false: sugar dissolves in water. (a) False (b) True

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