Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 957 · 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.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
2. 2.🧺 Which of these is needed for the density tower? (a) honey (b) a battery cell (c) a magnet (d) a balloon
3. 3.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls slowly (b) falls fast
4. 4.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is kept the same. (a) False (b) True
6. 6.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) throw the glass (c) taste each layer (d) do not lick the spoon
7. 7.True or false: sugar is not needed for the dissolving test. (a) False (b) True
8. 8.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
9. 9.🌈 In VIBGYOR, what number colour is green?
10. 10.True or false: a strip of cloth does not let water climb. (a) True (b) False
11. 11.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it settles at the bottom (c) it floats up (d) it dissolves
12. 12.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) True (b) False
14. 14.True or false: small pebbles does not dissolve in water. (a) True (b) False
15. 15.True or false: a cork sinks in water. (a) True (b) False
16. 16.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a glass of water (c) a mirror (d) a balloon
17. 17.⚖️ 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 white paper (c) the amount of water
18. 18.True or false: sugar left unstirred dissolves faster. (a) True (b) False
19. 19.⚖️ 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) sun or shade (c) how many drops form
20. 20.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) False (b) True
21. 21.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) honey (b) a pebble (c) an ice cube (d) a coin
23. 23.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a magnet (c) a teaspoon (d) a clock or timer
24. 24.🚀 Which of these goes backward? (a) the rocket (b) air from the balloon (c) the swimmer (d) the balloon
25. 25.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) at the very bottom (c) in the water layer (d) in the oil layer
26. 26.🔍 Which layer is on top in the honey-water-oil tower? (a) the spoon (b) coloured water (c) honey (d) cooking oil
27. 27.True or false: a balloon is needed for the paper helicopter. (a) False (b) True
28. 28.True or false: water from the oars goes forward. (a) True (b) False
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) how big we blow it (c) the slope of the string
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) True (b) False
31. 31.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) leave water on the floor (c) run around the tub (d) wipe up spills at once
32. 32.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) red (c) green (d) violet
33. 33.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) turmeric powder (c) a sink or a bucket (d) a towel
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) yeast (c) a stiff postcard (d) a glass of water
36. 36.⚖️ 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) how many drops form (b) sun or shade (c) the cling film cover
37. 37.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a battery cell (b) safety scissors (c) a pencil (d) a paper clip
38. 38.💧 Which of these is freezing? (a) a pond icing over (b) a puddle drying up (c) drops under a pot lid (d) butter going runny
39. 39.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it will not break (d) it is hotter
40. 40.🧺 Do we need cooking oil for the density tower? (a) not needed (b) needed

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