Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 619 · 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.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) honey (c) cotton wool (d) warm water
2. 2.🚀 Which of these goes forward? (a) the swimmer (b) water a swimmer pushes (c) water from the oars (d) gas from the rocket
3. 3.🍯 Is air denser or less dense than water? (a) less dense than water (b) denser than water
4. 4.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of pouring”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.🧺 Which of these is not needed for the density tower? (a) a spoon (b) honey (c) cooking oil (d) a battery cell
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) a mirror (d) a glass of water
7. 7.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a long string (c) a drinking straw (d) a mirror
8. 8.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
9. 9.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
10. 10.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
11. 11.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) powdered sugar (d) sugar left unstirred
12. 12.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the same window (c) the amount of water
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a towel (d) turmeric powder
15. 15.True or false: honey is not needed for the dissolving test. (a) False (b) True
16. 16.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to make it rain (d) to catch any spills
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) food colour (d) a few hours of waiting
18. 18.True or false: a strip of cloth does not let water climb. (a) True (b) False
19. 19.💧 Which of these does not let water climb? (a) a flower stem (b) a strip of cloth (c) a sugar cube (d) a piece of foil
20. 20.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it turns to stone (c) it sinks faster (d) it can float
21. 21.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) snow falling (c) a magnet (d) a shadow of ice
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) a mirror (d) small test objects
23. 23.🌈 How many colours do we name in a rainbow (VIBGYOR)?
24. 24.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the length of the stem (b) the room it stands in (c) the amount of colour (d) the kind of flower
27. 27.🧺 Do we need a ruler for the paper helicopter? (a) needed (b) not needed
28. 28.🛟 Which of these sinks in water? (a) an empty capped bottle (b) an ice cube (c) an ice-cream stick (d) a ball of clay
29. 29.⚖️ 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 same glass (b) the order of the layers (c) how much of each liquid (d) the same three liquids
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) how big we blow it (b) the slope of the string (c) the same string (d) the same straw
31. 31.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) a clock or timer (c) a comb (d) a magnet
32. 32.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) True (b) False
34. 34.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) False (b) True
35. 35.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) honey (c) a magnet (d) two clear glasses
36. 36.🍯 Which of these is less dense than water? (a) a glass marble (b) a pebble (c) very salty water (d) an ice cube
37. 37.🚀 Which of these goes backward? (a) the rocket (b) water a swimmer pushes (c) the balloon (d) the rowing boat
38. 38.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water is heavy (c) hot water is magnetic (d) hot water can scald
39. 39.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a tub of water (d) yeast
40. 40.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is the one thing we change. (a) False (b) True

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