Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 418 · 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 should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so it does not fall (d) so the Sun moves
2. 2.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
3. 3.⚖️ 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) False (b) True
4. 4.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
5. 5.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a rubber eraser (d) a paper towel
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
8. 8.True or false: an iron nail floats on water. (a) False (b) True
9. 9.🧺 Do we need safety scissors for the paper helicopter? (a) needed (b) not needed
10. 10.True or false: a piece of thermocol floats on water. (a) False (b) True
11. 11.💧 Which change is this: wet clothes drying? (a) evaporation (b) melting (c) condensation (d) freezing
12. 12.🧺 Which of these is needed for the paper helicopter? (a) yeast (b) a battery cell (c) safety scissors (d) a magnet
13. 13.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a steel spoon (d) a strip of cloth
14. 14.🧺 Which of these is needed for the water cycle bowl? (a) ice cubes (b) a battery cell (c) a mirror (d) a balloon
15. 15.💧 Which change is this: snow turning to water? (a) condensation (b) evaporation (c) freezing (d) melting
16. 16.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a mirror (c) a comb (d) sugar
17. 17.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
20. 20.🧺 Which of these is needed for the paper helicopter? (a) yeast (b) a strip of paper (c) a magnet (d) a balloon
21. 21.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water is magnetic (c) hot water is heavy (d) hot water can scald
22. 22.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
23. 23.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) a cotton thread (b) a steel spoon (c) a piece of chalk (d) a flower stem
25. 25.True or false: chalk powder does not dissolve in water. (a) True (b) False
26. 26.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) taste each layer (c) throw the glass (d) do not lick the spoon
27. 27.True or false: cooking oil is less dense than water. (a) False (b) True
28. 28.⚖️ 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) how many drops form (b) sun or shade (c) the cling film cover (d) the size of the bowl
29. 29.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
30. 30.🛟 Does a ball of clay float or sink in water? (a) sinks (b) floats
31. 31.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) sand (d) water
32. 32.🥛 Which of these works by magnetism? (a) a suction hook (b) a compass needle (c) a medicine dropper (d) a vacuum cleaner
33. 33.🔍 Which is the odd one out? (a) a coin (b) cooking oil (c) a pebble (d) honey
34. 34.True or false: ice becoming water is melting. (a) False (b) True
35. 35.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a mirror (c) a tub of water (d) small test objects
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) True (b) False
37. 37.🧺 Do we need a ruler for the paper helicopter? (a) not needed (b) needed
38. 38.True or false: a small cup is not needed for the water cycle bowl. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) a feather (b) a toy parachute (c) a crumpled paper ball (d) an open sheet of paper
40. 40.🛟 What should you do with wet floors after the experiment? (a) pour more water (b) slide on them (c) leave them wet (d) wipe them dry

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