Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 623 · 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.🔮 Predict: you fold the two blades the other way. What changes? (a) it spins the other way (b) it falls upward (c) it does not fall (d) it turns blue
2. 2.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
3. 3.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) the cap is sticky (d) air inside pushes back
5. 5.🛟 Which of these floats on water? (a) a cork (b) a glass marble (c) a steel spoon (d) a ball of clay
6. 6.True or false: a ping-pong ball sinks in water. (a) False (b) True
7. 7.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.True or false: a bicycle pump works by magnetism. (a) False (b) True
9. 9.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) yeast (c) bright sunlight (d) a battery cell
10. 10.⚖️ 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) brightness of rainbow (b) the same window (c) the same glass (d) the amount of water
11. 11.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
12. 12.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) stare at the Sun (d) never look at the Sun
13. 13.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
14. 14.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) True (b) False
15. 15.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) a spoon (c) cooking oil (d) a battery cell
16. 16.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
17. 17.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.🧺 Do we need warm water for the dissolving test? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) yeast (c) small test objects (d) a results table
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
22. 22.🍯 Is a cork denser or less dense than water? (a) less dense than water (b) denser than water
23. 23.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they separate again (b) they turn to honey (c) they become solid (d) they mix for ever
24. 24.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a results table (d) a battery cell
25. 25.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the glass is painted (c) the water is coloured (d) the paper makes colours
26. 26.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a strip of paper (c) a pencil (d) yeast
27. 27.🧺 Do we need a small cup for the water cycle bowl? (a) needed (b) not needed
28. 28.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) over a sink or bucket (d) near a plug point
29. 29.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) cotton wool (c) two clear glasses (d) sugar
30. 30.💧 Which change is this: dew on morning grass? (a) freezing (b) evaporation (c) melting (d) condensation
31. 31.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) a teaspoon (c) two clear glasses (d) a clock or timer
32. 32.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a mirror (c) two clear glasses (d) cold water
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) True (b) False
34. 34.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) cling film (c) ice cubes (d) a balloon
35. 35.🧺 Which of these is not needed for the paper helicopter? (a) a mirror (b) safety scissors (c) a pencil (d) a ruler
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a towel (c) turmeric powder (d) a balloon
37. 37.⚖️ 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 pouring (b) the same glass (c) the same three liquids (d) the order of the layers
38. 38.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) small test objects (c) yeast (d) a results table
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a towel (d) a stiff postcard
40. 40.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet

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