Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 686 · 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: honey is needed for the density tower. (a) False (b) True
2. 2.🧺 Do we need a pencil for the paper helicopter? (a) needed (b) not needed
3. 3.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
4. 4.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) look for leftover grains (c) taste it (d) poke it with a finger
5. 5.⚖️ 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) the same card (b) whether the card stays (c) how full the glass is (d) the same glass
6. 6.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a mirror (c) two chairs (d) sticky tape
7. 7.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so the Sun moves (c) so it turns blue (d) so it gets hot
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) how big we blow it (b) the same tape (c) the same straw (d) the slope of the string
10. 10.True or false: yeast is not needed for the water rainbow. (a) True (b) False
11. 11.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls fast (b) falls slowly
12. 12.🥄 Which of these dissolves in water? (a) sawdust (b) chalk powder (c) small pebbles (d) glucose powder
13. 13.🔍 Which is the odd one out? (a) a coin (b) very salty water (c) a pebble (d) cooking oil
14. 14.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) cotton wool (c) a clock or timer (d) warm water
15. 15.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) a results table (c) small test objects (d) a towel for spills
16. 16.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
17. 17.⚖️ 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
18. 18.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) particles move faster (c) sugar likes the dark (d) cold water is wet
19. 19.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
20. 20.💧 Which of these does not let water climb? (a) a piece of foil (b) a strip of cloth (c) a flower stem (d) a paper towel
21. 21.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
22. 22.🧺 Which of these is not needed for the water cycle bowl? (a) a battery cell (b) cling film (c) a small cup (d) ice cubes
23. 23.True or false: small pebbles dissolves in water. (a) True (b) False
24. 24.True or false: a feather falls slowly through the air. (a) False (b) True
25. 25.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the water turns red (b) more drops form (c) fewer drops form (d) the bowl freezes
26. 26.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we keep it the same (b) we change it (c) we measure it
28. 28.True or false: a mirror is needed for the density tower. (a) True (b) False
29. 29.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False
30. 30.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
31. 31.🧺 Do we need a spoon for the density tower? (a) needed (b) not needed
32. 32.⚖️ 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
33. 33.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
34. 34.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) turmeric powder (c) a tub of water (d) a results table
35. 35.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) two clear glasses (c) a comb (d) sugar
36. 36.🥛 Which of these works by magnetism? (a) a compass needle (b) a vacuum cleaner (c) a bicycle pump (d) a drinking straw
37. 37.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a balloon (c) a pencil (d) a paper clip
38. 38.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a magnet (c) a paper clip (d) a ruler
39. 39.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
40. 40.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) capillary action (d) melting

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