Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 471 · 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.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) yeast (b) two chairs (c) sticky tape (d) a balloon
2. 2.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) smell it closely (c) poke it with a finger (d) taste it
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
4. 4.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the water turns red (b) fewer drops form (c) more drops form (d) the bowl freezes
5. 5.🌈 In VIBGYOR, what number colour is indigo?
6. 6.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a battery cell (c) a pencil (d) a ruler
7. 7.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
9. 9.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
10. 10.🚀 Which of these goes backward? (a) the swimmer (b) the rowing boat (c) water a swimmer pushes (d) the balloon
11. 11.⚖️ 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 keep it the same (c) we measure it
12. 12.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) faster (c) not at all (d) the same
13. 13.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.🍯 Which of these is denser than water? (a) a ping-pong ball (b) cooking oil (c) an ice cube (d) a coin
15. 15.⚖️ 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 what we measure. (a) False (b) True
16. 16.True or false: a mirror is needed for the dissolving test. (a) False (b) True
17. 17.💧 Which change is this: drops on a cold glass? (a) melting (b) evaporation (c) freezing (d) condensation
18. 18.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
19. 19.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) False (b) True
20. 20.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is magnetic (c) ice is very cold (d) water is sticky
21. 21.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a balloon (b) a strip of paper (c) a ruler (d) a pencil
22. 22.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the bottle is magnetic (d) the cap is sticky
23. 23.🚀 Which of these goes forward? (a) water from the oars (b) air from the balloon (c) the swimmer (d) water a swimmer pushes
24. 24.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it goes less far (c) it flies off the string (d) it goes much farther
25. 25.🔍 Which is the odd one out? (a) an ice cube (b) a coin (c) an iron nail (d) a pebble
26. 26.True or false: a balloon is not needed for the dissolving test. (a) False (b) True
27. 27.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
28. 28.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a balloon (c) sticky tape (d) a battery cell
29. 29.💧 Which of these is evaporation? (a) snow turning to water (b) water becoming ice (c) ice becoming water (d) a puddle drying up
30. 30.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
31. 31.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
32. 32.True or false: a compass needle works by air pressure. (a) False (b) True
33. 33.True or false: a paper helicopter falls fast through the air. (a) True (b) False
34. 34.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is kept the same. (a) True (b) False
35. 35.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) warm water (c) two clear glasses (d) honey
36. 36.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
37. 37.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) sugar (c) warm water (d) a magnet
38. 38.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands
39. 39.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.🔍 Which layer is on top in the honey-water-oil tower? (a) cooking oil (b) honey (c) coloured water (d) the spoon

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