Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 880 · 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.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
2. 2.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil turns into honey (c) oil makes it rain (d) oil attracts magnets
3. 3.🚁 What does the paper helicopter do as it falls? (a) it spins round (b) it stays still in air (c) it flies upward (d) it turns into a ball
4. 4.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
5. 5.🚁 Dropped from a raised hand, does a toy parachute fall slowly or fast? (a) falls slowly (b) falls fast
6. 6.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the petals turn bluish (d) the water turns green
7. 7.🧺 Do we need yeast for the water cycle bowl? (a) not needed (b) needed
8. 8.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) yeast (c) a balloon (d) a sheet of white paper
9. 9.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
10. 10.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) air inside pushes back (c) the cap is sticky (d) water is hiding there
11. 11.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) how full the glass is (b) whether the card stays (c) the way we turn it (d) the same glass
12. 12.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a magnetic pin holder (c) a medicine dropper (d) a suction hook
13. 13.🧺 Which of these is needed for the density tower? (a) cooking oil (b) turmeric powder (c) a balloon (d) a battery cell
14. 14.🚁 Which of these falls fast through the air? (a) a crumpled paper ball (b) a fluff of cotton (c) an open sheet of paper (d) a toy parachute
15. 15.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it travels less far (c) it speeds up (d) it goes backward first
16. 16.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) turmeric powder (b) water with food colour (c) cooking oil (d) a spoon
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
18. 18.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) two chairs (c) a mirror (d) sticky tape
19. 19.🚁 Which of these falls fast through the air? (a) a paper helicopter (b) a fluff of cotton (c) a stone (d) a toy parachute
20. 20.True or false: a paper helicopter falls slowly through the air. (a) False (b) True
21. 21.🛟 What should you do with popped balloon pieces? (a) chew them (b) keep them in your mouth (c) throw them away safely (d) give them to a baby
22. 22.📘 What does “dense” mean? (a) heavy for its size (b) very colourful (c) very thin (d) very hot
23. 23.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) from your raised hand (c) a wobbly chair (d) a high window ledge
24. 24.True or false: sugar in warm water dissolves faster. (a) True (b) False
25. 25.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
26. 26.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) a battery cell (c) a balloon (d) honey
27. 27.🛟 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
28. 28.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it became air (c) it vanished for ever (d) it spread in the water
29. 29.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it sinks (c) it dissolves (d) it floats
30. 30.🔮 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) some water evaporates (d) it turns to ice
31. 31.🚀 Which of these goes backward? (a) the rowing boat (b) water from the oars (c) the balloon (d) the rocket
32. 32.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
33. 33.🛟 Does a coin float or sink in water? (a) floats (b) sinks
34. 34.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
35. 35.True or false: chalk powder dissolves in water. (a) False (b) True
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) False (b) True
37. 37.🚀 Which of these goes backward? (a) the balloon (b) the rocket (c) air from the balloon (d) the swimmer
38. 38.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) it changes colour (c) hot water can scald (d) hot water is magnetic
39. 39.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a paper towel (d) a rubber eraser
40. 40.🔍 Which is the odd one out? (a) a metal key (b) an iron nail (c) an ice-cream stick (d) a ball of clay

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