Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 522 · 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 not needed for the paper helicopter? (a) a strip of paper (b) safety scissors (c) a paper clip (d) a balloon
2. 2.⚖️ 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 the layers”? (a) we change it (b) we measure it (c) we keep it the same
3. 3.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
4. 4.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a mirror (c) a sink or a bucket (d) a glass of water
5. 5.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) the water increases (b) some water evaporates (c) it turns to salt (d) it turns to ice
6. 6.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
7. 7.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is the one thing we change. (a) True (b) False
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a magnet (b) a paper clip (c) a strip of paper (d) safety scissors
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) the kind of flower (c) time for colour to show
11. 11.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
12. 12.⚖️ 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) sun or shade (b) how many drops form (c) the time we wait
13. 13.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
14. 14.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
15. 15.🧺 Do we need vinegar for the balloon rocket? (a) not needed (b) needed
16. 16.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) chew them (c) give them to a baby (d) keep them in your mouth
17. 17.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar in warm water (d) sugar left unstirred
18. 18.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a pencil (c) a strip of paper (d) a balloon
19. 19.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it turns into a kite (c) it goes less far (d) it flies off the string
20. 20.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of chalk (c) a piece of foil (d) a cotton thread
21. 21.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a drinking straw (c) turmeric powder (d) sticky tape
22. 22.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) a battery cell (c) a small cup (d) ice cubes
24. 24.⚖️ 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 “how much of each liquid”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) faster (b) they turn to ice (c) they never dry (d) slower
26. 26.🛟 What should you do with wet floors after the experiment? (a) wipe them dry (b) slide on them (c) pour more water (d) leave them wet
27. 27.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it goes backward first (c) it speeds up (d) it travels farther
28. 28.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it vanished for ever (c) it sank as sand (d) it became air
29. 29.⚖️ 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 keep it the same (b) we measure it (c) we change it
30. 30.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we change it (b) we keep it the same (c) we measure it
31. 31.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a mirror (c) a drinking straw (d) turmeric powder
32. 32.🧺 Which of these is needed for the paper helicopter? (a) a battery cell (b) turmeric powder (c) a paper clip (d) a mirror
33. 33.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the water turns green (d) the flower floats away
34. 34.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) magnetism (d) air pressure
35. 35.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
36. 36.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the sugar turns to salt (b) some stays undissolved (c) the water turns solid (d) all of it dissolves
37. 37.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is kept the same. (a) False (b) True
38. 38.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) the small pebble (c) the big log (d) both of them
39. 39.🧺 Which of these is needed for the density tower? (a) a magnet (b) cooking oil (c) a balloon (d) turmeric powder
40. 40.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) more plain water (c) a few ice cubes (d) a little shaking

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