Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 997 · 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.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
2. 2.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) its hollow shape (c) it has a magnet (d) steel is very light
3. 3.🚀 Which of these goes forward? (a) water from the oars (b) gas from the rocket (c) the swimmer (d) water a swimmer pushes
4. 4.True or false: water is not needed for the water cycle bowl. (a) False (b) True
5. 5.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they become solid (c) they separate again (d) they mix for ever
6. 6.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they all turn green (d) they stay white
7. 7.🧺 Do we need a mirror for the paper helicopter? (a) needed (b) not needed
8. 8.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) more friction, less far (c) it goes faster (d) less friction
9. 9.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) small test objects (c) a balloon (d) turmeric powder
10. 10.🧺 Do we need a big bowl for the water cycle bowl? (a) not needed (b) needed
11. 11.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed
12. 12.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) False (b) True
13. 13.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) wind (b) sunshine (c) lightning (d) rain
14. 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the kind of sugar (b) the stirring (c) the water temperature (d) time to dissolve
15. 15.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) small test objects (c) a tub of water (d) a results table
16. 16.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
17. 17.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a glass of water (d) a balloon
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) turmeric powder (d) a glass of water
19. 19.True or false: a ping-pong ball is denser than water. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) butter going runny (b) sweat drying on skin (c) wet hair drying (d) a puddle drying up
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the kind of clay (b) the amount of clay (c) the tub of water (d) the shape of the clay
22. 22.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.🔍 Which is the odd one out? (a) a pebble (b) a cork (c) a steel spoon (d) a glass marble
24. 24.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) turmeric powder (b) a strip of paper (c) a pencil (d) a ruler
25. 25.⚖️ 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
26. 26.🌈 In VIBGYOR, what number colour is blue?
27. 27.True or false: sugar dissolves in water. (a) True (b) False
28. 28.⚖️ 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 keep it the same (b) we measure it (c) we change it
29. 29.True or false: yeast is not needed for the water rainbow. (a) True (b) False
30. 30.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
31. 31.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) sticky tape (c) a battery cell (d) two chairs
32. 32.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) never look at the Sun (d) look at it through glass
33. 33.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a small rainbow (c) a magnet (d) snow falling
34. 34.True or false: water from the oars goes forward. (a) False (b) True
35. 35.🧺 Do we need a balloon for the paper helicopter? (a) not needed (b) needed
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) True (b) False
37. 37.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
38. 38.🔍 Which is the odd one out? (a) a paper towel (b) a piece of chalk (c) a flower stem (d) a glass marble
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) small pebbles (b) sand (c) food colour (d) cooking oil

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