Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 746 · 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 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 white paper (b) brightness of rainbow (c) the same glass (d) the amount of water
2. 2.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
3. 3.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we keep it the same (b) we measure it (c) we change it
4. 4.🧺 Which of these is needed for the dissolving test? (a) honey (b) a teaspoon (c) cotton wool (d) a balloon
5. 5.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) water (c) a battery cell (d) ice cubes
6. 6.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the kind of flower (b) the amount of colour (c) the length of the stem (d) time for colour to show
7. 7.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of pouring”? (a) we measure it (b) we change it (c) we keep it the same
8. 8.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a strip of paper (c) a paper clip (d) a battery cell
9. 9.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
11. 11.True or false: an ice-cream stick floats on water. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) a coin (b) a pebble (c) a ping-pong ball (d) a glass marble
13. 13.💧 Which of these does not let water climb? (a) a plastic ruler (b) a cotton thread (c) a piece of chalk (d) a paper towel
14. 14.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) a magnet (c) a drinking straw (d) vinegar
15. 15.True or false: a balloon is not needed for the density tower. (a) True (b) False
16. 16.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar in warm water (d) sugar left unstirred
17. 17.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.🔍 Which is the odd one out? (a) a coin (b) a crumpled paper ball (c) a stone (d) a paper helicopter
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) True (b) False
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
21. 21.🎈 When does the balloon rocket stop? (a) when it gets cold (b) it never stops (c) when the air runs out (d) when it turns blue
22. 22.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) turmeric powder (c) a magnet (d) bright sunlight
23. 23.💧 Which change is this: drops on a cold glass? (a) melting (b) condensation (c) evaporation (d) freezing
24. 24.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) how big we blow it (c) the same tape (d) the same straw
25. 25.🔍 Which is the odd one out? (a) air (b) cooking oil (c) very salty water (d) an ice cube
26. 26.True or false: a strip of paper is needed for the paper helicopter. (a) True (b) False
27. 27.🌈 How many colours do we name in a rainbow (VIBGYOR)?
28. 28.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a results table (c) a magnet (d) a towel for spills
29. 29.True or false: a magnet is not needed for the balloon rocket. (a) False (b) True
30. 30.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so the Sun moves (d) so it does not fall
31. 31.🔍 Which is the odd one out? (a) sand (b) sawdust (c) food colour (d) small pebbles
32. 32.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
33. 33.⚖️ 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
34. 34.🛟 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
35. 35.True or false: a mirror is needed for the density tower. (a) True (b) False
36. 36.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
37. 37.⚖️ 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 change it (b) we keep it the same (c) we measure it
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) yeast (b) a balloon (c) two chairs (d) sticky tape
40. 40.🔍 Which is the odd one out? (a) a puddle drying up (b) ice becoming water (c) butter going runny (d) snow turning to water

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