Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 761 · 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.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the amount of colour (b) the length of the stem (c) time for colour to show
4. 4.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) slide on them (c) wipe them dry (d) pour more water
5. 5.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) air pressure (d) friction
6. 6.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it dissolves (c) it settles at the bottom (d) it turns blue
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) turmeric powder
8. 8.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) sugar (c) honey (d) warm water
10. 10.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
11. 11.True or false: a feather sinks in water. (a) True (b) False
12. 12.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) a battery cell
13. 13.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil makes it rain (c) spilled oil is slippery (d) oil attracts magnets
14. 14.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the paper clip (b) the kind of paper (c) the person dropping (d) the length of the blades
15. 15.🌈 How many colours do we name in a rainbow (VIBGYOR)?
16. 16.💧 Which change is this: dew on morning grass? (a) evaporation (b) freezing (c) melting (d) condensation
17. 17.🛟 Does a piece of thermocol float or sink in water? (a) sinks (b) floats
18. 18.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a bicycle pump (c) a medicine dropper (d) a vacuum cleaner
19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is kept the same. (a) True (b) False
20. 20.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls fast (b) falls slowly
21. 21.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) look for leftover grains (c) taste it (d) smell it closely
22. 22.🔍 Which is the odd one out? (a) glucose powder (b) table salt (c) cooking oil (d) baking soda
23. 23.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a glass of water (d) yeast
25. 25.True or false: cotton wool is needed for the dissolving test. (a) True (b) False
26. 26.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the time we wait (b) the cling film cover (c) sun or shade (d) how many drops form
27. 27.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so the Sun moves (d) so it does not fall
28. 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) False (b) True
29. 29.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
30. 30.True or false: an empty capped bottle sinks in water. (a) True (b) False
31. 31.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
32. 32.True or false: a small cup is not needed for the water cycle bowl. (a) False (b) True
33. 33.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) how much of each liquid (b) the order of the layers (c) the order of pouring
34. 34.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
35. 35.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
36. 36.🚀 Which of these goes backward? (a) the rowing boat (b) the balloon (c) water from the oars (d) the swimmer
37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.🛟 Does a feather float or sink in water? (a) sinks (b) floats
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the room it stands in (c) the length of the stem
40. 40.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) a long string (d) two chairs

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