Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 520 · 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.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) magnetism (d) air pressure
2. 2.⚖️ 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
3. 3.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True
4. 4.True or false: turmeric powder is not needed for the float-or-sink test. (a) True (b) False
5. 5.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
6. 6.True or false: a fridge magnet works by magnetism. (a) False (b) True
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the amount of water (b) the same white paper (c) the same glass (d) brightness of rainbow
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a magnet (c) food colour (d) yeast
9. 9.🔍 Which is the odd one out? (a) an ice cube (b) an empty capped bottle (c) a piece of thermocol (d) a coin
10. 10.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) play near a deep pond (c) wipe up spills at once (d) run around the tub
11. 11.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is kept the same. (a) True (b) False
12. 12.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
13. 13.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a balloon (c) a long string (d) vinegar
14. 14.💧 Which change is this: wet clothes drying? (a) melting (b) evaporation (c) freezing (d) condensation
15. 15.🧺 Which of these is not needed for the density tower? (a) water with food colour (b) honey (c) turmeric powder (d) a spoon
16. 16.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) safety scissors (c) yeast (d) a pencil
17. 17.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) safety scissors (c) a strip of paper (d) a magnet
18. 18.⚖️ 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 keep it the same (b) we measure it (c) we change it
19. 19.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
20. 20.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) hot water is magnetic (c) it changes colour (d) hot water can scald
21. 21.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it floats away (d) it turns all red
22. 22.🧺 Which of these is needed for the density tower? (a) yeast (b) a tall clear glass (c) a mirror (d) a balloon
23. 23.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
24. 24.🚁 Which of these falls fast through the air? (a) an open sheet of paper (b) a feather (c) a paper helicopter (d) a stone
25. 25.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a balloon (b) honey (c) a tall clear glass (d) water with food colour
26. 26.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) slower (c) faster (d) not at all
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
30. 30.🌈 In VIBGYOR, what number colour is indigo?
31. 31.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil turns into honey (c) oil attracts magnets (d) spilled oil is slippery
32. 32.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) False (b) True
33. 33.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
34. 34.🧺 Which of these is needed for the water cycle bowl? (a) turmeric powder (b) a battery cell (c) a mirror (d) cling film
35. 35.🧺 Do we need honey for the dissolving test? (a) needed (b) not needed
36. 36.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it goes backward first (c) it speeds up (d) it travels less far
37. 37.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) air pushing up (c) a magnet (d) glue on the card
38. 38.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) a battery cell (d) a balloon
39. 39.⚖️ 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 measure it (b) we change it (c) we keep it the same
40. 40.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False

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