Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 328 · 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.🍯 Is a ping-pong ball denser or less dense than water? (a) denser than water (b) less dense than water
2. 2.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) turmeric powder (b) ice cubes (c) a small cup (d) water
3. 3.🍯 Why does honey sink to the bottom of the glass? (a) it is the stickiest (b) it is the densest (c) it is the coldest (d) it is yellow
4. 4.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a mirror (b) sunlight (c) ice cubes (d) water
5. 5.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the length of the blades (b) the kind of paper (c) the paper clip (d) time to reach the floor
7. 7.🧺 Which of these is not needed for the float-or-sink test? (a) a mirror (b) a towel for spills (c) a tub of water (d) small test objects
8. 8.🔍 Which is the odd one out? (a) a glass marble (b) a cork (c) an empty capped bottle (d) a ping-pong ball
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the kind of flower (b) time for colour to show (c) the length of the stem (d) the amount of colour
10. 10.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is what we measure. (a) False (b) True
11. 11.🧺 Which of these is needed for the paper helicopter? (a) a mirror (b) yeast (c) a magnet (d) a pencil
12. 12.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) play near a deep pond (c) run around the tub (d) leave water on the floor
13. 13.🍯 Is a cork denser or less dense than water? (a) less dense than water (b) denser than water
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the tub of water (b) the amount of clay (c) whether it floats (d) the shape of the clay
15. 15.🔍 Which is the odd one out? (a) a piece of thermocol (b) an ice-cream stick (c) a coin (d) a feather
16. 16.True or false: sunlight is not needed for the water cycle bowl. (a) True (b) False
17. 17.🛟 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
18. 18.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) taste it (c) smell it closely (d) poke it with a finger
19. 19.🔍 Which is the odd one out? (a) a compass needle (b) a bicycle pump (c) a magnetic pin holder (d) a fridge magnet
20. 20.True or false: a balloon is needed for the water rainbow. (a) True (b) False
21. 21.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
22. 22.🛟 Which of these sinks in water? (a) a ping-pong ball (b) a steel spoon (c) an ice cube (d) a cork
23. 23.True or false: warm water is needed for the dissolving test. (a) False (b) True
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a balloon (d) a glass of water
25. 25.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) more drops form (b) the bowl freezes (c) the water turns red (d) fewer drops form
26. 26.💧 Which of these does not let water climb? (a) a flower stem (b) a strip of cloth (c) a plastic ruler (d) a sugar cube
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is the one thing we change. (a) False (b) True
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) food colour (c) a glass of water (d) a few hours of waiting
29. 29.True or false: water is not needed for the water cycle bowl. (a) True (b) False
30. 30.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
31. 31.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
32. 32.🧺 Which of these is needed for the paper helicopter? (a) turmeric powder (b) yeast (c) a magnet (d) safety scissors
33. 33.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a magnet (c) turmeric powder (d) a glass of water
34. 34.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the shape of the clay (b) the tub of water (c) whether it floats (d) the kind of clay
35. 35.🚀 Which of these goes backward? (a) the balloon (b) the rocket (c) air from the balloon (d) the rowing boat
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) True (b) False
37. 37.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
39. 39.⚖️ 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 change it (b) we keep it the same (c) we measure it
40. 40.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder

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