Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 116 · 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: a glass marble lets water climb up it. (a) False (b) True
2. 2.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
3. 3.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it does not fall (c) so it gets hot (d) so it turns blue
4. 4.True or false: a coin floats on water. (a) False (b) True
5. 5.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) stare at the Sun (d) look at it through glass
6. 6.True or false: a coin falls slowly through the air. (a) True (b) False
7. 7.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a mirror (c) a results table (d) small test objects
8. 8.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a mirror (c) bright sunlight (d) a clear glass of water
10. 10.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a tall clear glass (c) a magnet (d) cooking oil
11. 11.📘 What does “dense” mean? (a) very thin (b) very colourful (c) very hot (d) heavy for its size
12. 12.🔍 Which is the odd one out? (a) a sugar cube (b) a strip of cloth (c) a cotton thread (d) a steel spoon
13. 13.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
14. 14.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.🧺 Which of these is not needed for the water cycle bowl? (a) turmeric powder (b) ice cubes (c) sunlight (d) a big bowl
16. 16.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we keep it the same (b) we change it (c) we measure it
17. 17.🫗 Why does cooking oil float on top of water? (a) oil is sticky (b) oil is heavier (c) oil is hot (d) oil is less dense
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the water temperature (c) the amount of water
19. 19.True or false: a ping-pong ball is denser than water. (a) True (b) False
20. 20.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to hide the corks (c) to splash everyone (d) to keep children safe
21. 21.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it turns into a kite (c) it can pop loudly (d) it changes colour
22. 22.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil attracts magnets (c) oil makes it rain (d) spilled oil is slippery
23. 23.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) honey (b) a clock or timer (c) sugar (d) warm water
24. 24.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) a big bowl (c) water (d) a balloon
25. 25.True or false: a battery cell is not needed for the paper helicopter. (a) False (b) True
26. 26.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) more plain water (c) lots of salt stirred in (d) a little shaking
27. 27.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) False (b) True
29. 29.🛟 Does a cork float or sink in water? (a) sinks (b) floats
30. 30.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the length of the blades (b) time to reach the floor (c) the person dropping
31. 31.🚁 What does the paper helicopter do as it falls? (a) it turns into a ball (b) it stays still in air (c) it spins round (d) it flies upward
32. 32.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
33. 33.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
35. 35.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) the shape of the clay (c) whether it floats
37. 37.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a clear glass of water (d) a magnet
38. 38.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) whether it floats (b) the tub of water (c) the amount of clay (d) the shape of the clay
40. 40.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) leave water on the floor (c) run around the tub (d) play near a deep pond

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