Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 732 · 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 battery cell is not needed for the balloon rocket. (a) True (b) False
2. 2.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) a magnet (c) a big bowl (d) a small cup
3. 3.💧 Which of these does not let water climb? (a) a piece of chalk (b) a sugar cube (c) a cotton thread (d) a rubber eraser
4. 4.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a magnet (c) a clock or timer (d) a comb
5. 5.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it turns into a kite (c) it changes colour (d) it can pop loudly
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is kept the same. (a) False (b) True
8. 8.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a mirror (c) cooking oil (d) water with food colour
9. 9.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) a sunny window (d) a mirror
10. 10.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) turmeric powder (c) small test objects (d) a tub of water
11. 11.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a cotton thread (d) a rubber eraser
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) turmeric powder (d) a white flower
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) True (b) False
15. 15.🧺 Do we need a magnet for the paper helicopter? (a) not needed (b) needed
16. 16.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a drinking straw (c) a mirror (d) two chairs
17. 17.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) two chairs (c) a long string (d) turmeric powder
18. 18.🛟 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
19. 19.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a clear glass of water (c) bright sunlight (d) a sunny window
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) a glass of water (d) a battery cell
21. 21.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) air inside pushes back (d) the cap is sticky
22. 22.🧺 Do we need yeast for the water cycle bowl? (a) not needed (b) needed
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is the one thing we change. (a) True (b) False
24. 24.🍯 Which of these is denser than water? (a) a cork (b) a ping-pong ball (c) very salty water (d) an ice cube
25. 25.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) both of them (c) the big log (d) neither of them
26. 26.True or false: wet hair drying is freezing. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) a ping-pong ball (b) a steel spoon (c) a pebble (d) a metal key
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is what we measure. (a) True (b) False
29. 29.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
30. 30.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil turns into honey (c) oil attracts magnets (d) oil makes it rain
31. 31.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
32. 32.🍯 Is a ping-pong ball denser or less dense than water? (a) denser than water (b) less dense than water
33. 33.🎈 When does the balloon rocket stop? (a) when it gets cold (b) when it turns blue (c) it never stops (d) when the air runs out
34. 34.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.🚁 Which of these falls fast through the air? (a) an open sheet of paper (b) a toy parachute (c) a paper helicopter (d) a coin
36. 36.True or false: a flower stem lets water climb up it. (a) False (b) True
37. 37.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
38. 38.🚁 Which of these falls fast through the air? (a) a glass marble (b) a toy parachute (c) an open sheet of paper (d) a paper helicopter
39. 39.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
40. 40.🧺 Do we need a battery cell for the water cycle bowl? (a) needed (b) not needed

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids