Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 978 · 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.🛟 Does a cork float or sink in water? (a) floats (b) sinks
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) bright sunlight (d) yeast
3. 3.True or false: a drinking straw is not needed for the balloon rocket. (a) False (b) True
4. 4.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil makes it rain (c) oil attracts magnets (d) spilled oil is slippery
5. 5.🍯 Is a ping-pong ball denser or less dense than water? (a) denser than water (b) less dense than water
6. 6.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) turmeric powder (d) a tub of water
7. 7.🧺 Which of these is not needed for the density tower? (a) honey (b) turmeric powder (c) a spoon (d) a tall clear glass
8. 8.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is kept the same. (a) False (b) True
9. 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) True (b) False
10. 10.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls fast (b) falls slowly
11. 11.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the water is coloured (c) the glass is painted (d) the paper makes colours
12. 12.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) a long string (c) a drinking straw (d) sticky tape
13. 13.True or false: yeast is needed for the water cycle bowl. (a) True (b) False
14. 14.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) hot water can scald (c) hot water is heavy (d) it changes colour
15. 15.True or false: sugar in icy water dissolves slower. (a) True (b) False
16. 16.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they fall off at once (c) they turn two colours (d) they all turn green
17. 17.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) how full the glass is (b) the same glass (c) whether the card stays
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is kept the same. (a) True (b) False
19. 19.🧺 Which of these is not needed for the dissolving test? (a) a balloon (b) sugar (c) cold water (d) a clock or timer
20. 20.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
21. 21.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) how much of each liquid (b) the same glass (c) the order of pouring (d) the order of the layers
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) turmeric powder (d) a towel
23. 23.🌈 How many colours do we name in a rainbow (VIBGYOR)?
24. 24.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the petals turn bluish (d) the water turns green
25. 25.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) a battery cell (d) a results table
26. 26.🧺 Which of these is needed for the density tower? (a) a mirror (b) a battery cell (c) yeast (d) cooking oil
27. 27.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) pour more water (c) wipe them dry (d) slide on them
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is kept the same. (a) False (b) True
29. 29.True or false: honey is less dense than water. (a) True (b) False
30. 30.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
31. 31.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the water layer (b) in the oil layer (c) at the very bottom (d) on top of the oil
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the tub of water
33. 33.🧺 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 magnet
34. 34.🌈 In VIBGYOR, what number colour is violet?
35. 35.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to win a prize (c) to keep children safe (d) to hide the corks
36. 36.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
37. 37.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
38. 38.True or false: honey is denser than water. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) a stone (b) a steel spoon (c) a coin (d) a paper helicopter
40. 40.🧺 Do we need a magnet for the dissolving test? (a) needed (b) not needed

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