Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 855 · 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.True or false: a glass marble is less dense than water. (a) False (b) True
2. 2.🌈 In VIBGYOR, what number colour is orange?
3. 3.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) yeast (c) a tall clear glass (d) cooking oil
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we measure it (b) we keep it the same (c) we change it
6. 6.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
7. 7.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is kept the same. (a) False (b) True
8. 8.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
9. 9.💧 Which of these is condensation? (a) making ice lollies (b) butter going runny (c) snow turning to water (d) drops on a cold glass
10. 10.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) run around the tub (c) wipe up spills at once (d) leave water on the floor
11. 11.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.🥄 Which of these does not dissolve in water? (a) table salt (b) food colour (c) baking soda (d) chalk powder
14. 14.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil turns into honey (c) spilled oil is slippery (d) oil attracts magnets
15. 15.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we measure it (b) we keep it the same (c) we change it
16. 16.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same glass (b) the order of pouring (c) the order of the layers (d) the same three liquids
17. 17.🧺 Do we need a balloon for the paper helicopter? (a) not needed (b) needed
18. 18.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we change it (c) we measure it
19. 19.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it changes colour (c) it turns into a kite (d) it can pop loudly
20. 20.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
21. 21.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same tape (b) distance it travels (c) how big we blow it
23. 23.🍯 Which of these is less dense than water? (a) air (b) a pebble (c) very salty water (d) a coin
24. 24.🧺 Do we need yeast for the water cycle bowl? (a) needed (b) not needed
25. 25.🚁 Dropped from a raised hand, does a coin fall slowly or fast? (a) falls fast (b) falls slowly
26. 26.True or false: a balloon is not needed for the paper helicopter. (a) False (b) True
27. 27.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
28. 28.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
29. 29.True or false: a mirror is not needed for the water cycle bowl. (a) True (b) False
30. 30.🔍 How can you get the salt back from salty water? (a) stir it more (b) add more water (c) let the water evaporate (d) keep it in a fridge
31. 31.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
32. 32.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a magnet (c) a tub of water (d) a results table
33. 33.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so the Sun moves (d) so it does not fall
34. 34.🔍 Which is the odd one out? (a) wet clothes drying (b) drops under a pot lid (c) dew on morning grass (d) a misty bathroom mirror
35. 35.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
36. 36.True or false: a clock or timer is needed for the dissolving test. (a) False (b) True
37. 37.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
39. 39.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the big log (c) the small pebble (d) neither of them
40. 40.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) cold water (c) cotton wool (d) sugar

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