Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 714 · 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.🌈 How many colours do we name in a rainbow (VIBGYOR)?
2. 2.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
3. 3.🧺 Do we need a magnet for the water cycle bowl? (a) needed (b) not needed
4. 4.🍯 Which of these is denser than water? (a) a cork (b) an ice cube (c) cooking oil (d) very salty water
5. 5.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to catch any spills (d) to cool the glass
6. 6.🔍 Which is the odd one out? (a) a crumpled paper ball (b) a stone (c) a paper helicopter (d) a steel spoon
7. 7.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so it gets hot (d) so the Sun moves
8. 8.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we measure it (b) we keep it the same (c) we change it
9. 9.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
10. 10.⚖️ 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
11. 11.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) hot water is magnetic (c) it changes colour (d) hot water is heavy
12. 12.🍯 Is a ping-pong ball denser or less dense than water? (a) less dense than water (b) denser than water
13. 13.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they separate again (b) they turn to honey (c) they mix for ever (d) they become solid
14. 14.🌊 What pushes a floating cork upward? (a) the cork itself (b) the air above (c) the tub (d) the water
15. 15.🧺 Do we need a small cup for the water cycle bowl? (a) not needed (b) needed
16. 16.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) how many drops form (b) the amount of water (c) sun or shade (d) the time we wait
17. 17.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) how much of each liquid (b) the same glass (c) the order of the layers (d) the order of pouring
18. 18.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it through glass (c) stare at the Sun (d) look at it in a mirror
19. 19.🛟 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
20. 20.🚁 What does the paper helicopter do as it falls? (a) it turns into a ball (b) it stays still in air (c) it flies upward (d) it spins round
21. 21.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it travels farther (c) it goes backward first (d) it speeds up
22. 22.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a magnet (c) a clear glass of water (d) a sunny window
23. 23.💧 Which change is this: wet hair drying? (a) melting (b) freezing (c) evaporation (d) condensation
24. 24.🚁 Which of these falls slowly through the air? (a) a stone (b) a steel spoon (c) a coin (d) a toy parachute
25. 25.True or false: honey is not needed for the density tower. (a) True (b) False
26. 26.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) over a sink or bucket (d) on a bed
27. 27.📘 What pulls the paper helicopter down to the floor? (a) gravity (b) the wind (c) air pressure (d) magnetism
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a glass of water (c) a white flower (d) a few hours of waiting
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) a few ice cubes (c) more plain water (d) lots of salt stirred in
31. 31.⚖️ 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 three liquids (b) how much of each liquid (c) the order of pouring (d) the order of the layers
32. 32.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a mirror (c) a drinking straw (d) a balloon
33. 33.⚖️ 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) how full the glass is (b) the same glass (c) whether the card stays (d) the same card
34. 34.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is the one thing we change. (a) False (b) True
35. 35.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it sinks at once (d) it turns to plastic
36. 36.💧 Why do water drops form on the outside of a glass of ice water? (a) vapour in air cools (b) the glass sweats (c) ice escapes the glass (d) the glass leaks
37. 37.🧺 Which of these is needed for the float-or-sink test? (a) a results table (b) turmeric powder (c) a magnet (d) yeast
38. 38.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
39. 39.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) prisms (d) balloons
40. 40.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it sank as sand (c) it spread in the water (d) it vanished for ever

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