Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 333 · 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 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 measure it (c) we keep it the same
2. 2.True or false: a dry leaf sinks in water. (a) True (b) False
3. 3.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a shadow of ice (d) a small rainbow
4. 4.💧 Which change is this: wet hair drying? (a) melting (b) evaporation (c) freezing (d) condensation
5. 5.🎈 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
6. 6.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is the one thing we change. (a) False (b) True
7. 7.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the bottle is magnetic (c) air inside pushes back (d) the cap is sticky
8. 8.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a balloon (c) yeast (d) sticky tape
9. 9.🧺 Do we need water for the water cycle bowl? (a) needed (b) not needed
10. 10.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) a glass marble (b) a pebble (c) an ice cube (d) a coin
12. 12.🔍 Which is the odd one out? (a) drops under a pot lid (b) ice becoming water (c) butter going runny (d) snow turning to water
13. 13.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
14. 14.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) a high window ledge (c) from your raised hand (d) a wobbly chair
15. 15.🚀 Which of these goes forward? (a) water a swimmer pushes (b) gas from the rocket (c) the rowing boat (d) air from the balloon
16. 16.⚖️ 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
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) True (b) False
18. 18.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
19. 19.⚖️ 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 same glass”? (a) we change it (b) we measure it (c) we keep it the same
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.🧺 Do we need a tall clear glass for the density tower? (a) needed (b) not needed
22. 22.🔍 Which is the odd one out? (a) a feather (b) a toy parachute (c) a steel spoon (d) an open sheet of paper
23. 23.🧺 Do we need a magnet for the dissolving test? (a) needed (b) not needed
24. 24.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
25. 25.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a comb (c) two clear glasses (d) a teaspoon
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) how big we blow it (c) the slope of the string (d) the same string
27. 27.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.🛟 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
29. 29.⚖️ 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) the size of the bowl (b) sun or shade (c) the time we wait (d) how many drops form
30. 30.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) yeast (d) a tub of water
31. 31.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so the Sun moves (d) so it does not fall
33. 33.🍯 Is a pebble denser or less dense than water? (a) less dense than water (b) denser than water
34. 34.🛟 How should you check if the sugar has dissolved? (a) taste it (b) smell it closely (c) poke it with a finger (d) look for leftover grains
35. 35.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) a glass of water (d) a balloon
37. 37.🧺 Which of these is needed for the water cycle bowl? (a) a big bowl (b) a mirror (c) turmeric powder (d) a battery cell
38. 38.⚖️ 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) the time of day (c) brightness of rainbow
39. 39.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls fast (b) falls slowly
40. 40.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is the one thing we change. (a) True (b) False

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