Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 71 · 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 steel spoon (b) a fluff of cotton (c) a glass marble (d) a coin
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.⚖️ 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
4. 4.True or false: cling film is not needed for the water cycle bowl. (a) False (b) True
5. 5.🍯 Is honey denser or less dense than water? (a) less dense than water (b) denser than water
6. 6.🔍 Which is the odd one out? (a) dew on morning grass (b) drops on a cold glass (c) ice becoming water (d) drops under a pot lid
7. 7.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) honey (b) two clear glasses (c) sugar (d) a teaspoon
8. 8.🫗 Why does cooking oil float on top of water? (a) oil is hot (b) oil is sticky (c) oil is less dense (d) oil is heavier
9. 9.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a long string (c) yeast (d) a drinking straw
10. 10.🛟 Which of these floats on water? (a) a dry leaf (b) a ball of clay (c) a coin (d) a steel spoon
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is kept the same. (a) False (b) True
12. 12.True or false: sugar in icy water dissolves faster. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a ping-pong ball (b) air (c) a cork (d) a coin
14. 14.🧺 Do we need a paper clip for the paper helicopter? (a) needed (b) not needed
15. 15.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
16. 16.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to make it rain (d) to catch any spills
17. 17.📘 What is water vapour? (a) tiny ice cubes (b) water as a gas (c) salty water (d) a kind of smoke
18. 18.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
20. 20.⚖️ 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 glass is kept the same. (a) False (b) True
21. 21.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of pouring”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.🧺 Do we need a strip of paper for the paper helicopter? (a) needed (b) not needed
23. 23.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they turn two colours (c) they stay white (d) they all turn green
24. 24.🔍 Which is the odd one out? (a) a coin (b) a crumpled paper ball (c) a paper helicopter (d) a stone
25. 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is the one thing we change. (a) True (b) False
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
29. 29.💧 Why do water drops form on the outside of a glass of ice water? (a) vapour in air cools (b) the glass sweats (c) the glass leaks (d) ice escapes the glass
30. 30.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) vinegar (c) a battery cell (d) a balloon
31. 31.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
32. 32.🛟 Which of these sinks in water? (a) a piece of thermocol (b) an ice cube (c) a pebble (d) a dry leaf
33. 33.🎈 Why does the balloon rocket move along the string? (a) escaping air pushes it (b) a magnet pulls it (c) the string pulls it (d) the straw is heavy
34. 34.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a piece of foil (d) a paper towel
35. 35.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a magnet (b) a tall clear glass (c) a spoon (d) water with food colour
36. 36.🚀 Which of these goes backward? (a) the rowing boat (b) the rocket (c) the swimmer (d) air from the balloon
37. 37.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) small test objects (c) a battery cell (d) a towel for spills
38. 38.True or false: turmeric powder is needed for the water cycle bowl. (a) True (b) False
39. 39.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
40. 40.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) lightning (b) wind (c) rain (d) sunshine

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