Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 903 · 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 of these works by air pressure? (a) a magnetic chess set (b) a drinking straw (c) a magnetic pin holder (d) a fridge magnet
2. 2.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the person dropping (b) the kind of paper (c) the paper clip (d) time to reach the floor
3. 3.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) True (b) False
4. 4.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) neither of them (c) powdered sugar (d) the sugar cube
5. 5.True or false: powdered sugar dissolves slower. (a) False (b) True
6. 6.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it does not fall (d) so it turns blue
7. 7.True or false: snow turning to water is evaporation. (a) False (b) True
8. 8.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) slide on them (c) pour more water (d) wipe them dry
9. 9.True or false: a small cup is needed for the water cycle bowl. (a) False (b) True
10. 10.🧺 Which of these is not needed for the density tower? (a) honey (b) water with food colour (c) a spoon (d) a mirror
11. 11.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it flies off the string (c) it goes less far (d) it goes much farther
12. 12.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) safety scissors (c) gardening shears (d) sharp kitchen shears
13. 13.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
14. 14.True or false: two chairs is needed for the balloon rocket. (a) False (b) True
15. 15.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
16. 16.🧺 Do we need a battery cell for the water cycle bowl? (a) not needed (b) needed
17. 17.🧺 Which of these is needed for the density tower? (a) a balloon (b) a battery cell (c) a tall clear glass (d) yeast
18. 18.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it is magnetic (d) it will not break
19. 19.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a mirror (d) a tub of water
20. 20.🔍 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
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) False (b) True
22. 22.True or false: water is needed for the water cycle bowl. (a) True (b) False
23. 23.📘 What does “dense” mean? (a) heavy for its size (b) very hot (c) very thin (d) very colourful
24. 24.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
25. 25.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) little air left inside (d) it looks nicer
26. 26.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the water layer (c) at the very bottom (d) in the oil layer
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a sheet of white paper (d) a mirror
28. 28.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the order of pouring (b) the same glass (c) the same three liquids (d) how much of each liquid
29. 29.🔍 Which is the odd one out? (a) a paper helicopter (b) a stone (c) an open sheet of paper (d) a feather
30. 30.True or false: a balloon is not needed for the water cycle bowl. (a) False (b) True
31. 31.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a long string (c) a mirror (d) vinegar
32. 32.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) False (b) True
33. 33.⚖️ 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 measure it (c) we keep it the same
34. 34.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a balloon (c) a magnet (d) a sunny window
35. 35.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to keep children safe (c) to splash everyone (d) to hide the corks
36. 36.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
37. 37.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
38. 38.True or false: a plastic ruler lets water climb up it. (a) True (b) False
39. 39.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
40. 40.🍯 Which of these is denser than water? (a) a ping-pong ball (b) honey (c) an ice cube (d) a cork

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