Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 779 · 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 is a safe rule for the balloon rocket? (a) put string round a neck (b) aim it at your friend (c) keep it away from faces (d) blow it till it bursts
2. 2.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a sundial (c) a balloon rocket (d) a mirror
3. 3.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a comb (c) cotton wool (d) warm water
4. 4.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to cool the glass (c) to grow plants (d) to make it rain
5. 5.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a long string (c) a magnet (d) vinegar
6. 6.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) cling film (c) a magnet (d) a small cup
8. 8.💧 What happens to water vapour when it touches the cold cling film? (a) it disappears (b) it turns to drops (c) it turns to salt (d) it turns to smoke
9. 9.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) True (b) False
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) bright sunlight (d) a mirror
12. 12.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is what we measure. (a) True (b) False
13. 13.True or false: yeast is not needed for the float-or-sink test. (a) True (b) False
14. 14.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) warm water (c) cotton wool (d) a clock or timer
15. 15.True or false: a paper helicopter falls fast through the air. (a) False (b) True
16. 16.🚀 Which of these goes forward? (a) water a swimmer pushes (b) gas from the rocket (c) the balloon (d) air from the balloon
17. 17.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
18. 18.🛟 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
19. 19.True or false: a magnet is needed for the density tower. (a) True (b) False
20. 20.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a mirror (d) a sink or a bucket
21. 21.True or false: a piece of chalk does not let water climb. (a) True (b) False
22. 22.💧 Which of these is condensation? (a) a puddle drying up (b) wet clothes drying (c) ice becoming water (d) drops on a cold glass
23. 23.🚁 Which of these falls slowly through the air? (a) a toy parachute (b) a crumpled paper ball (c) a glass marble (d) a steel spoon
24. 24.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
25. 25.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we change it (c) we measure it
27. 27.🛟 Which of these floats on water? (a) a steel spoon (b) an iron nail (c) a cork (d) a coin
28. 28.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) yeast
30. 30.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) water with food colour (c) a battery cell (d) cooking oil
31. 31.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it turns white (c) it still floats (d) it dissolves
32. 32.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sheet of white paper (c) a sunny window (d) bright sunlight
34. 34.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) a wobbly chair (c) from your raised hand (d) a high window ledge
35. 35.True or false: a strip of paper is not needed for the paper helicopter. (a) False (b) True
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) turmeric powder (c) a few hours of waiting (d) a battery cell
37. 37.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same string (b) how big we blow it (c) distance it travels
38. 38.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) the same (c) faster (d) slower
40. 40.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns all red (d) it turns brighter

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