Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 481 · 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.🍯 Is air denser or less dense than water? (a) denser than water (b) less dense than water
2. 2.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is the one thing we change. (a) True (b) False
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) False (b) True
4. 4.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
5. 5.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) keep them in your mouth (c) chew them (d) throw them away safely
6. 6.True or false: butter going runny is evaporation. (a) True (b) False
7. 7.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
8. 8.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls fast (b) falls slowly
9. 9.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
10. 10.True or false: a magnetic chess set works by magnetism. (a) False (b) True
11. 11.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) cooking oil (b) a cork (c) a pebble (d) an ice cube
13. 13.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) the cold water (d) glue on the card
14. 14.🚀 Which of these goes backward? (a) the rocket (b) air from the balloon (c) the balloon (d) the rowing boat
15. 15.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a balloon (c) sugar (d) a magnet
16. 16.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
17. 17.True or false: cooking oil is less dense than water. (a) False (b) True
18. 18.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) sunlight (c) a magnet (d) ice cubes
19. 19.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) smell it closely (c) taste it (d) poke it with a finger
20. 20.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) more drops form (b) fewer drops form (c) the water turns red (d) the bowl freezes
21. 21.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a balloon (c) a results table (d) a tub of water
22. 22.⚖️ 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) how many drops form (b) the time we wait (c) sun or shade
23. 23.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) a balloon
24. 24.🛟 Where is a safe place to drop the helicopter from? (a) a wobbly chair (b) a roof edge (c) a high window ledge (d) from your raised hand
25. 25.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) a paper cutter (c) sharp kitchen shears (d) gardening shears
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is the one thing we change. (a) True (b) False
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) True (b) False
28. 28.True or false: a battery cell is needed for the water cycle bowl. (a) False (b) True
29. 29.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a towel for spills (c) a magnet (d) a tub of water
30. 30.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they turn to ice (b) slower (c) faster (d) they never dry
31. 31.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
32. 32.💧 Which change is this: a pond icing over? (a) condensation (b) melting (c) freezing (d) evaporation
33. 33.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water is heavy (c) hot water is magnetic (d) hot water can scald
35. 35.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a few ice cubes (c) a little shaking (d) lots of salt stirred in
36. 36.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) turmeric powder (c) a glass of water (d) a magnet
38. 38.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) honey (c) a tall clear glass (d) yeast
39. 39.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
40. 40.True or false: a mirror is not needed for the balloon rocket. (a) False (b) True

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