Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 68 · 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.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
2. 2.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a balloon (c) a clear glass of water (d) a sunny window
4. 4.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to stop the spinning (b) to make it fall slower (c) to make it magnetic (d) to weigh down the bottom
5. 5.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) turmeric powder (d) bright sunlight
6. 6.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals lose water to air (d) petals like colour
7. 7.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the order of the layers (b) the same glass (c) how much of each liquid (d) the order of pouring
8. 8.🍯 Why does honey sink to the bottom of the glass? (a) it is the stickiest (b) it is yellow (c) it is the coldest (d) it is the densest
9. 9.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) look for leftover grains (c) taste it (d) poke it with a finger
10. 10.🧺 Which of these is not needed for the water cycle bowl? (a) cling film (b) ice cubes (c) water (d) a magnet
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) a magnet (d) a white flower
12. 12.True or false: powdered sugar dissolves slower. (a) True (b) False
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sheet of white paper (c) bright sunlight (d) a clear glass of water
14. 14.True or false: cold water is needed for the dissolving test. (a) False (b) True
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a few hours of waiting (c) a white flower (d) a glass of water
16. 16.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
17. 17.True or false: a battery cell is needed for the density tower. (a) True (b) False
18. 18.⚖️ 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 keep it the same (b) we measure it (c) we change it
19. 19.True or false: snow turning to water is condensation. (a) False (b) True
20. 20.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) never look at the Sun (d) stare at the Sun
21. 21.🚁 What does the paper helicopter do as it falls? (a) it turns into a ball (b) it flies upward (c) it stays still in air (d) it spins round
22. 22.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
23. 23.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) the size of the bowl (b) how many drops form (c) sun or shade
24. 24.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
25. 25.True or false: safety scissors is not needed for the paper helicopter. (a) True (b) False
26. 26.🍯 Is an ice cube denser or less dense than water? (a) denser than water (b) less dense than water
27. 27.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
28. 28.⚖️ 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
29. 29.🍯 Which of these is denser than water? (a) a ping-pong ball (b) very salty water (c) air (d) an ice cube
30. 30.🎈 When does the balloon rocket stop? (a) it never stops (b) when it turns blue (c) when it gets cold (d) when the air runs out
31. 31.True or false: a balloon is not needed for the water cycle bowl. (a) False (b) True
32. 32.🌈 In VIBGYOR, what number colour is violet?
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a magnet (d) a glass of water
34. 34.🍯 Is very salty water denser or less dense than water? (a) denser than water (b) less dense than water
35. 35.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
38. 38.🚀 Which of these goes forward? (a) air from the balloon (b) gas from the rocket (c) water a swimmer pushes (d) the balloon
39. 39.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a towel (c) a glass of water (d) a stiff postcard
40. 40.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) turmeric powder (c) a tub of water (d) a results table

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