Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 719 · 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 of these is needed for the dissolving test? (a) a balloon (b) a magnet (c) two clear glasses (d) cotton wool
2. 2.🍯 Why does honey sink to the bottom of the glass? (a) it is yellow (b) it is the densest (c) it is the coldest (d) it is the stickiest
3. 3.🔍 You drop a coin into a tub of water. What do you see? (a) it sinks (b) it floats (c) it dissolves (d) it bounces up
4. 4.⚖️ 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 change it (c) we measure it
5. 5.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a magnet (b) a strip of paper (c) safety scissors (d) a ruler
6. 6.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
7. 7.True or false: two chairs is not needed for the balloon rocket. (a) False (b) True
8. 8.🍯 Which of these is denser than water? (a) a ping-pong ball (b) cooking oil (c) a cork (d) a glass marble
9. 9.True or false: cooking oil is denser than water. (a) False (b) True
10. 10.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) the size of the bowl (b) how many drops form (c) sun or shade
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a magnet (c) a mirror (d) turmeric powder
14. 14.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
15. 15.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) run around the tub (c) leave water on the floor (d) wipe up spills at once
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
17. 17.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is the one thing we change. (a) False (b) True
18. 18.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
19. 19.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
20. 20.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we change it (b) we measure it (c) we keep it the same
21. 21.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
22. 22.True or false: a magnetic chess set works by air pressure. (a) False (b) True
23. 23.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) sunlight (c) turmeric powder (d) a big bowl
24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) False (b) True
25. 25.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
26. 26.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is kept the same. (a) False (b) True
27. 27.True or false: a piece of thermocol floats on water. (a) False (b) True
28. 28.💧 Which of these is melting? (a) a misty bathroom mirror (b) wet hair drying (c) drops on a cold glass (d) snow turning to water
29. 29.⚖️ 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) True (b) False
30. 30.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
31. 31.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) it turns all red (d) the rainbow fades
32. 32.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) taste it (c) poke it with a finger (d) look for leftover grains
33. 33.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) spilled oil is slippery (c) oil turns into honey (d) oil makes it rain
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the amount of water (c) the time of day
35. 35.🥄 Which of these dissolves slower? (a) a big sugar cube (b) sugar stirred well (c) powdered sugar (d) sugar in warm water
36. 36.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a tall clear glass (c) a magnet (d) cooking oil
37. 37.True or false: a clock or timer is needed for the dissolving test. (a) False (b) True
38. 38.True or false: a magnet is not needed for the balloon rocket. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) a paper helicopter (b) an open sheet of paper (c) a stone (d) a toy parachute
40. 40.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True

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