Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 152 · 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.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) True (b) False
2. 2.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) red (c) blue (d) green
3. 3.🧺 Which of these is needed for the float-or-sink test? (a) small test objects (b) a magnet (c) a balloon (d) turmeric powder
4. 4.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
5. 5.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
6. 6.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) near a plug point (d) over a sink or bucket
7. 7.🛟 Which of these floats on water? (a) a pebble (b) a coin (c) an iron nail (d) a piece of thermocol
8. 8.🧺 Which of these is not needed for the density tower? (a) honey (b) a tall clear glass (c) a magnet (d) cooking oil
9. 9.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) throw the glass (c) do not lick the spoon (d) taste each layer
10. 10.⚖️ 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 pouring is what we measure. (a) False (b) True
11. 11.True or false: a fridge magnet works by air pressure. (a) True (b) False
12. 12.True or false: a mirror is not needed for the density tower. (a) True (b) False
13. 13.🧺 Which of these is not needed for the paper helicopter? (a) a pencil (b) a paper clip (c) a strip of paper (d) a magnet
14. 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) wipe up spills at once (c) run around the tub (d) leave water on the floor
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the length of the blades (b) the drop height (c) time to reach the floor
17. 17.🧺 Do we need water for the water cycle bowl? (a) needed (b) not needed
18. 18.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is kept the same. (a) True (b) False
19. 19.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
20. 20.📘 What does “dense” mean? (a) very thin (b) heavy for its size (c) very colourful (d) very hot
21. 21.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) the water increases (b) it turns to salt (c) it turns to ice (d) some water evaporates
22. 22.🌈 In VIBGYOR, what number colour is indigo?
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) True (b) False
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a white flower (d) a mirror
25. 25.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
26. 26.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
27. 27.🌈 In VIBGYOR, what number colour is red?
28. 28.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) turmeric powder (d) a balloon
29. 29.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a tall clear glass (c) a mirror (d) a spoon
30. 30.True or false: a battery cell is not needed for the float-or-sink test. (a) False (b) True
31. 31.🧺 Do we need a big bowl for the water cycle bowl? (a) needed (b) not needed
32. 32.🧺 Do we need a pencil for the paper helicopter? (a) not needed (b) needed
33. 33.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) a balloon (c) a spoon (d) a tall clear glass
34. 34.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True
35. 35.True or false: a spoon is needed for the density tower. (a) True (b) False
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a balloon (d) a few hours of waiting
37. 37.🔍 Which is the odd one out? (a) a drinking straw (b) a suction hook (c) a medicine dropper (d) a magnetic chess set
38. 38.🌈 How many colours do we name in a rainbow (VIBGYOR)?
39. 39.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it travels less far (c) it goes backward first (d) it travels farther
40. 40.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed

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