Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 876 · 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.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to grow plants (d) to make it rain
2. 2.⚖️ 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 same three liquids”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) two clear glasses (c) cold water (d) honey
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 measure it (b) we keep it the same (c) we change it
5. 5.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) turmeric powder (c) a balloon (d) a battery cell
6. 6.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) two chairs (c) vinegar (d) sticky tape
7. 7.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) yeast (c) a small cup (d) water
8. 8.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
10. 10.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is magnetic (c) it is hotter (d) it is heavier
11. 11.🛟 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
12. 12.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) sun or shade (b) the cling film cover (c) the amount of water (d) how many drops form
13. 13.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
14. 14.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) in the honey layer (c) under the honey (d) on top of the oil
15. 15.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
16. 16.💧 Which of these is melting? (a) drops under a pot lid (b) butter going runny (c) wet hair drying (d) a puddle drying up
17. 17.True or false: sugar left unstirred dissolves faster. (a) True (b) False
18. 18.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
19. 19.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
20. 20.🛟 How should you check if the sugar has dissolved? (a) taste it (b) look for leftover grains (c) poke it with a finger (d) smell it closely
21. 21.True or false: a coin is less dense than water. (a) False (b) True
22. 22.True or false: a battery cell is not needed for the balloon rocket. (a) True (b) False
23. 23.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) neither of them (c) powdered sugar (d) the sugar cube
24. 24.💧 Which of these is freezing? (a) a pond icing over (b) drops under a pot lid (c) a puddle drying up (d) ice becoming water
25. 25.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) True (b) False
27. 27.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) False (b) True
28. 28.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
29. 29.🧺 Do we need a strip of paper for the paper helicopter? (a) not needed (b) needed
30. 30.🍯 Is a coin denser or less dense than water? (a) less dense than water (b) denser than water
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) turmeric powder
32. 32.📘 What is water vapour? (a) tiny ice cubes (b) a kind of smoke (c) salty water (d) water as a gas
33. 33.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it goes backward first (c) it speeds up (d) it travels less far
34. 34.True or false: a long string is needed for the balloon rocket. (a) False (b) True
35. 35.True or false: a glass marble is less dense than water. (a) False (b) True
36. 36.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
37. 37.🔍 Which is the odd one out? (a) cooking oil (b) sawdust (c) sugar (d) sand
38. 38.🍯 Which of these is less dense than water? (a) air (b) a coin (c) a glass marble (d) a pebble
39. 39.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is what we measure. (a) False (b) True
40. 40.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a towel for spills (d) yeast

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