Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 760 · 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.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a teaspoon (c) two clear glasses (d) cotton wool
2. 2.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) two clear glasses (c) warm water (d) a magnet
3. 3.🧺 Do we need a magnet for the density tower? (a) not needed (b) needed
4. 4.⚖️ 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) True (b) False
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) False (b) True
6. 6.🥄 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
7. 7.True or false: a magnet is needed for the float-or-sink test. (a) False (b) True
8. 8.🚁 What does the paper helicopter do as it falls? (a) it flies upward (b) it turns into a ball (c) it stays still in air (d) it spins round
9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a mirror (c) a sheet of white paper (d) a clear glass of water
10. 10.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a strip of paper (c) a balloon (d) safety scissors
11. 11.💧 Why do water drops form on the outside of a glass of ice water? (a) the glass leaks (b) ice escapes the glass (c) vapour in air cools (d) the glass sweats
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the water temperature (b) time to dissolve (c) the kind of sugar (d) the stirring
13. 13.True or false: yeast is needed for the water rainbow. (a) False (b) True
14. 14.🔍 How can you get the salt back from salty water? (a) stir it more (b) keep it in a fridge (c) let the water evaporate (d) add more water
15. 15.True or false: small pebbles dissolves in water. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) a piece of foil (b) a glass marble (c) a strip of cloth (d) a plastic ruler
17. 17.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
18. 18.🎈 When does the balloon rocket stop? (a) when it gets cold (b) when the air runs out (c) when it turns blue (d) it never stops
19. 19.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.📘 What is water vapour? (a) water as a gas (b) tiny ice cubes (c) salty water (d) a kind of smoke
21. 21.💧 Which of these is melting? (a) a misty bathroom mirror (b) wet hair drying (c) butter going runny (d) sweat drying on skin
22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the amount of water (b) the water temperature (c) time to dissolve
23. 23.True or false: sunlight is needed for the water cycle bowl. (a) True (b) False
24. 24.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
25. 25.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) water with food colour (c) a mirror (d) cooking oil
26. 26.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a magnetic chess set (d) a drinking straw
27. 27.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) look at it in a mirror (d) stare at the Sun
28. 28.True or false: a paper clip is not needed for the paper helicopter. (a) True (b) False
29. 29.🎈 What is the job of the straw on the string? (a) it blows air in (b) it guides the balloon (c) it makes it heavier (d) it holds water
30. 30.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
31. 31.🛟 Which of these sinks in water? (a) an ice cube (b) a ping-pong ball (c) a cork (d) a glass marble
32. 32.⚖️ 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
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a mirror (d) a white flower
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the same glass (b) the amount of water (c) brightness of rainbow
35. 35.💧 Which of these is condensation? (a) a pond icing over (b) a misty bathroom mirror (c) wet hair drying (d) snow turning to water
36. 36.True or false: turmeric powder is not needed for the balloon rocket. (a) True (b) False
37. 37.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar left unstirred (c) sugar stirred well (d) sugar in icy water
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the length of the stem (b) the kind of flower (c) time for colour to show (d) the amount of water
39. 39.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny bits of dust (c) tiny drops of water (d) many colours mixed
40. 40.🔍 Which is the odd one out? (a) an empty capped bottle (b) an ice-cream stick (c) a cork (d) a metal key

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