Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 106 · 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 coin sinks in water. (a) True (b) False
2. 2.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a vacuum cleaner (c) a medicine dropper (d) a fridge magnet
3. 3.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
4. 4.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a sheet of white paper (c) bright sunlight (d) a sunny window
5. 5.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) True (b) False
6. 6.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a results table (c) a towel for spills (d) a battery cell
7. 7.🍯 Is an ice cube denser or less dense than water? (a) denser than water (b) less dense than water
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.🔍 Which is the odd one out? (a) a paper towel (b) a glass marble (c) a steel spoon (d) a piece of foil
10. 10.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water is magnetic (c) hot water can scald (d) hot water is heavy
11. 11.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card stays on (d) the card flies away
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) True (b) False
13. 13.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.🌈 How many colours do we name in a rainbow (VIBGYOR)?
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a few hours of waiting (d) a white flower
16. 16.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the flat sheet (b) neither of them (c) the crumpled ball (d) a sheet of glass
17. 17.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
18. 18.⚖️ 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) whether the card stays (b) the way we turn it (c) the same glass (d) how full the glass is
19. 19.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) turmeric powder (b) safety scissors (c) a paper clip (d) a pencil
20. 20.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
21. 21.💧 Which of these is condensation? (a) a puddle drying up (b) sweat drying on skin (c) wet clothes drying (d) dew on morning grass
22. 22.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
23. 23.True or false: two chairs is needed for the balloon rocket. (a) True (b) False
24. 24.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we change it (b) we keep it the same (c) we measure it
25. 25.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a pencil (c) a magnet (d) a strip of paper
26. 26.⚖️ 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) the order of pouring (b) the same three liquids (c) the order of the layers (d) how much of each liquid
27. 27.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) the same card (b) how full the glass is (c) whether the card stays
28. 28.🧺 Which of these is needed for the paper helicopter? (a) a balloon (b) a battery cell (c) a strip of paper (d) turmeric powder
29. 29.True or false: a mirror is needed for the water rainbow. (a) False (b) True
30. 30.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
31. 31.⚖️ 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 the one thing we change. (a) True (b) False
32. 32.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red
33. 33.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is what we measure. (a) True (b) False
34. 34.🧺 Which of these is needed for the dissolving test? (a) honey (b) a comb (c) a teaspoon (d) a mirror
35. 35.📘 What do we call light bending as it passes from air into water? (a) refraction (b) reflection (c) magnetism (d) evaporation
36. 36.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a compass needle (d) a suction hook
37. 37.🔍 Which is the odd one out? (a) a ball of clay (b) a glass marble (c) a coin (d) a feather
38. 38.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a balloon (b) a strip of paper (c) safety scissors (d) a pencil
39. 39.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) the sugar turns to salt (c) all of it dissolves (d) the water turns solid
40. 40.True or false: sawdust dissolves in water. (a) True (b) False

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