Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 221 · 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.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
2. 2.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the water turns green (d) the stem turns to ice
3. 3.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
4. 4.🔍 Which is the odd one out? (a) sugar (b) table salt (c) food colour (d) sand
5. 5.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) sharp kitchen shears (c) a paper cutter (d) gardening shears
6. 6.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it turns into a kite (c) it gets too heavy (d) it can pop loudly
7. 7.🧺 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) a mirror (d) a sunny window
8. 8.🥄 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) sugar (d) sawdust
9. 9.🚀 Which of these goes backward? (a) the swimmer (b) the rocket (c) gas from the rocket (d) the balloon
10. 10.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) a sheet of white paper (d) yeast
11. 11.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil makes it rain (c) oil turns into honey (d) oil attracts magnets
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the same card (b) how full the glass is (c) the same glass (d) whether the card stays
13. 13.True or false: a coin is less dense than water. (a) False (b) True
14. 14.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
16. 16.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls fast (b) falls slowly
17. 17.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a compass needle (d) a medicine dropper
18. 18.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) little air left inside (c) water is heavier (d) the card gets wet
19. 19.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) sticky tape (c) a balloon (d) yeast
20. 20.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it turns blue (c) so it gets hot (d) so it does not fall
21. 21.🛟 Does a cork float or sink in water? (a) floats (b) sinks
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the length of the stem (c) the amount of colour (d) the room it stands in
23. 23.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a balloon (c) a sunny window (d) a clear glass of water
24. 24.🥄 Which of these dissolves faster? (a) sugar in warm water (b) sugar left unstirred (c) sugar in icy water (d) a big sugar cube
25. 25.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls slowly (b) falls fast
26. 26.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is kept the same. (a) True (b) False
27. 27.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) water with food colour (c) honey (d) a mirror
28. 28.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
29. 29.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) turmeric powder (c) sticky tape (d) a battery cell
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is what we measure. (a) True (b) False
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) a few hours of waiting (c) a glass of water (d) food colour
32. 32.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a balloon (c) cotton wool (d) cold water
33. 33.💧 Which of these lets water climb up it? (a) a flower stem (b) a plastic ruler (c) a glass marble (d) a piece of foil
34. 34.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels less far (c) it speeds up (d) it travels farther
35. 35.🧺 Do we need cling film for the water cycle bowl? (a) needed (b) not needed
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.⚖️ 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) False (b) True
38. 38.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
39. 39.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) the same tape (c) the same straw (d) how big we blow it

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