Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 74 · 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.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) oil makes it rain (c) oil turns into honey (d) spilled oil is slippery
2. 2.🧺 Which of these is needed for the paper helicopter? (a) a mirror (b) a magnet (c) turmeric powder (d) a paper clip
3. 3.True or false: the balloon goes backward. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) honey (b) a ping-pong ball (c) cooking oil (d) a cork
5. 5.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
6. 6.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) look for leftover grains (d) smell it closely
7. 7.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) stare at the Sun (d) look at it through glass
8. 8.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it does not fall (c) so it gets hot (d) so the Sun moves
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a balloon
10. 10.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) water with food colour (c) cooking oil (d) yeast
11. 11.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it sinks (c) it turns blue (d) it floats higher
12. 12.True or false: water with food colour is needed for the density tower. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a cotton thread (d) a plastic ruler
14. 14.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
15. 15.💧 In the covered bowl, where does the water vapour come from? (a) water warmed by the Sun (b) the air outside (c) the cling film (d) the bowl itself
16. 16.🔍 Which is the odd one out? (a) cooking oil (b) baking soda (c) sugar (d) table salt
17. 17.🛟 Does a dry leaf float or sink in water? (a) floats (b) sinks
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is kept the same. (a) False (b) True
20. 20.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
21. 21.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
22. 22.True or false: a fluff of cotton falls fast through the air. (a) True (b) False
23. 23.⚖️ 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 the one thing we change. (a) False (b) True
24. 24.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a battery cell (b) sunlight (c) a small cup (d) cling film
25. 25.True or false: sugar stirred well dissolves slower. (a) False (b) True
26. 26.⚖️ 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
27. 27.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it goes much farther (c) it turns into a kite (d) it flies off the string
28. 28.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
29. 29.🥄 Which of these dissolves in water? (a) sand (b) sugar (c) cooking oil (d) sawdust
30. 30.True or false: sugar dissolves in water. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) ice becoming water (b) snow turning to water (c) wet hair drying (d) butter going runny
32. 32.🔍 Which is the odd one out? (a) a toy parachute (b) a feather (c) a stone (d) a fluff of cotton
33. 33.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) no change at all (c) less friction (d) more friction, less far
34. 34.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
35. 35.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a suction hook (d) a compass needle
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) True (b) False
37. 37.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) safety scissors (c) turmeric powder (d) a pencil
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is what we measure. (a) True (b) False
40. 40.🔍 What do you see after pouring honey, water and oil into one glass? (a) the glass gets hot (b) bubbles of gas (c) three separate layers (d) one mixed colour

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