Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 337 · 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 is the odd one out? (a) a glass marble (b) an iron nail (c) an ice cube (d) a steel spoon
2. 2.🥄 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) chalk powder (d) table salt
3. 3.🧺 Which of these is not needed for the water cycle bowl? (a) sunlight (b) cling film (c) a battery cell (d) a small cup
4. 4.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) yeast (c) bright sunlight (d) a sheet of white paper
5. 5.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) it changes colour (c) hot water is magnetic (d) hot water is heavy
6. 6.🧺 Do we need a small cup for the water cycle bowl? (a) needed (b) not needed
7. 7.📘 What is the push of air on a falling thing called? (a) dissolving (b) air resistance (c) floating (d) magnetism
8. 8.🔍 Which is the odd one out? (a) cooking oil (b) a cork (c) a glass marble (d) air
9. 9.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) water with food colour (c) cooking oil (d) a battery cell
10. 10.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) wind (b) rain (c) lightning (d) sunshine
11. 11.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil attracts magnets (c) oil makes it rain (d) spilled oil is slippery
12. 12.🥛 Which of these works by magnetism? (a) a suction hook (b) a vacuum cleaner (c) a magnetic chess set (d) a bicycle pump
13. 13.💧 Why do water drops form on the outside of a glass of ice water? (a) the glass leaks (b) the glass sweats (c) vapour in air cools (d) ice escapes the glass
14. 14.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) cotton wool (c) warm water (d) sugar
15. 15.🍯 Why does honey sink to the bottom of the glass? (a) it is the densest (b) it is yellow (c) it is the coldest (d) it is the stickiest
16. 16.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the way we turn it (b) whether the card stays (c) the same glass (d) how full the glass is
17. 17.True or false: sugar dissolves in water. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a feather (b) an open sheet of paper (c) a stone (d) a paper helicopter
19. 19.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.True or false: warm water is needed for the dissolving test. (a) False (b) True
21. 21.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
22. 22.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) never look at the Sun (d) stare at the Sun
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.🔍 Which is the odd one out? (a) wet hair drying (b) wet clothes drying (c) sweat drying on skin (d) drops on a cold glass
25. 25.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it turns blue (c) so it does not fall (d) so it gets hot
26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the amount of clay (b) whether it floats (c) the shape of the clay (d) the tub of water
27. 27.True or false: a magnet is needed for the float-or-sink test. (a) False (b) True
28. 28.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
29. 29.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.True or false: wet clothes drying is evaporation. (a) False (b) True
33. 33.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
34. 34.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
35. 35.🔍 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 flower floats away (d) the water turns green
36. 36.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) leave water on the floor (d) wipe up spills at once
37. 37.📘 What does “dense” mean? (a) very thin (b) very colourful (c) heavy for its size (d) very hot
38. 38.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
40. 40.🔍 How can you get the salt back from salty water? (a) let the water evaporate (b) add more water (c) stir it more (d) keep it in a fridge

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