Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 462 · 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.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a balloon (d) a white flower
2. 2.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) sand (d) water
3. 3.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
5. 5.True or false: a results table is not needed for the float-or-sink test. (a) False (b) True
6. 6.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is what we measure. (a) True (b) False
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) True (b) False
8. 8.True or false: a rubber eraser does not let water climb. (a) True (b) False
9. 9.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of chalk (c) a paper towel (d) a steel spoon
10. 10.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to stop the spinning (b) to make it magnetic (c) to make it fall slower (d) to weigh down the bottom
11. 11.🛟 Does a coin float or sink in water? (a) sinks (b) floats
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
15. 15.📘 What pulls the paper helicopter down to the floor? (a) the wind (b) magnetism (c) air pressure (d) gravity
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) honey (c) sugar (d) a clock or timer
18. 18.⚖️ 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 what we measure. (a) True (b) False
19. 19.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a long string (c) a balloon (d) vinegar
20. 20.🍯 Is a ping-pong ball denser or less dense than water? (a) denser than water (b) less dense than water
21. 21.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) pour it on the floor (c) taste each layer (d) do not lick the spoon
22. 22.🚁 What does the paper helicopter do as it falls? (a) it spins round (b) it stays still in air (c) it flies upward (d) it turns into a ball
23. 23.💧 Which change is this: butter going runny? (a) evaporation (b) condensation (c) melting (d) freezing
24. 24.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) how many drops form (b) the amount of water (c) the time we wait (d) sun or shade
25. 25.True or false: a magnetic chess set works by magnetism. (a) False (b) True
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of sugar (b) the kind of sugar (c) the amount of water (d) time to dissolve
27. 27.🍯 Which of these is less dense than water? (a) honey (b) a cork (c) very salty water (d) a coin
28. 28.🔍 Which is the odd one out? (a) a cork (b) a piece of thermocol (c) an empty capped bottle (d) a metal key
29. 29.🔍 Which is the odd one out? (a) an ice cube (b) a cork (c) a steel spoon (d) an empty capped bottle
30. 30.True or false: small test objects is needed for the float-or-sink test. (a) True (b) False
31. 31.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
32. 32.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) it changes colour (c) hot water is magnetic (d) hot water is heavy
33. 33.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a tub of water (d) a magnet
34. 34.🚀 Which of these goes backward? (a) the rocket (b) the balloon (c) the rowing boat (d) air from the balloon
35. 35.True or false: a big bowl is needed for the water cycle bowl. (a) False (b) True
36. 36.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
37. 37.🧺 Which of these is not needed for the water cycle bowl? (a) ice cubes (b) sunlight (c) a magnet (d) water
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) True (b) False
39. 39.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) True (b) False

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