Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 199 · 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 cork floats on water. (a) False (b) True
2. 2.🧺 Do we need water for the water cycle bowl? (a) not needed (b) needed
3. 3.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) cotton wool (c) two clear glasses (d) a teaspoon
4. 4.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) two chairs (c) a drinking straw (d) yeast
5. 5.🧺 Which of these is needed for the float-or-sink test? (a) small test objects (b) turmeric powder (c) a magnet (d) a mirror
6. 6.🧺 Which of these is not needed for the paper helicopter? (a) a magnet (b) safety scissors (c) a strip of paper (d) a pencil
7. 7.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil turns into honey (c) oil makes it rain (d) oil attracts magnets
8. 8.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar left unstirred (c) powdered sugar (d) sugar stirred well
9. 9.🍯 Which of these is denser than water? (a) honey (b) cooking oil (c) an ice cube (d) a cork
10. 10.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the kind of clay
11. 11.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it turns blue (c) it sinks (d) it floats higher
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.True or false: a balloon is not needed for the float-or-sink test. (a) True (b) False
14. 14.⚖️ 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 order of pouring”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a teaspoon (c) a mirror (d) warm water
16. 16.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
17. 17.True or false: a battery cell is not needed for the float-or-sink test. (a) True (b) False
18. 18.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is the one thing we change. (a) True (b) False
19. 19.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
20. 20.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the time we wait (b) sun or shade (c) the size of the bowl (d) how many drops form
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) False (b) True
23. 23.🥄 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
24. 24.🔍 Which is the odd one out? (a) a ball of clay (b) a pebble (c) a steel spoon (d) a ping-pong ball
25. 25.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True
26. 26.⚖️ 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 order of the layers”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.☀️ What is white sunlight really made of? (a) tiny drops of water (b) only yellow light (c) tiny bits of dust (d) many colours mixed
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) how full the glass is (b) whether the card stays (c) the same card (d) the way we turn it
29. 29.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
30. 30.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) look at it in a mirror (d) never look at the Sun
31. 31.🌈 In VIBGYOR, what number colour is violet?
32. 32.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) a big sugar cube (c) sugar in icy water (d) powdered sugar
35. 35.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
36. 36.True or false: honey is needed for the density tower. (a) True (b) False
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a balloon (c) a sunny window (d) bright sunlight
38. 38.🚀 Which of these goes forward? (a) water from the oars (b) air from the balloon (c) the rocket (d) water a swimmer pushes
39. 39.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) safety scissors (c) gardening shears (d) a paper cutter
40. 40.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) hot water is heavy (c) hot water is magnetic (d) it changes colour

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