Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 405 · 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.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we keep it the same (b) we measure it (c) we change it
3. 3.💧 Which change is this: wet clothes drying? (a) condensation (b) freezing (c) evaporation (d) melting
4. 4.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
5. 5.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a balloon rocket (c) a sundial (d) a mirror
6. 6.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is kept the same. (a) True (b) False
7. 7.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) a long string (c) a balloon (d) a drinking straw
8. 8.True or false: water is needed for the water cycle bowl. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) baking soda (b) table salt (c) sugar (d) cooking oil
10. 10.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is kept the same. (a) True (b) False
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.True or false: two chairs is not needed for the balloon rocket. (a) False (b) True
14. 14.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) smoke (d) sand
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a white flower (c) food colour (d) a glass of water
16. 16.True or false: drops under a pot lid is freezing. (a) True (b) False
17. 17.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
18. 18.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “how much of each liquid”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the paper clip (b) time to reach the floor (c) the length of the blades
20. 20.🧺 Which of these is not needed for the paper helicopter? (a) a ruler (b) a paper clip (c) a balloon (d) a strip of paper
21. 21.🧺 Do we need a spoon for the density tower? (a) not needed (b) needed
22. 22.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
23. 23.⚖️ 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 measure it (c) we change it
24. 24.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) sunshine (b) wind (c) lightning (d) rain
25. 25.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) two chairs (c) vinegar (d) a battery cell
26. 26.🎈 What is the job of the straw on the string? (a) it holds water (b) it makes it heavier (c) it blows air in (d) it guides the balloon
27. 27.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a small rainbow (c) a magnet (d) snow falling
28. 28.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
29. 29.⚖️ 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) brightness of rainbow (c) the amount of water
30. 30.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same three liquids”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is the one thing we change. (a) True (b) False
32. 32.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) air inside pushes back (d) the bottle is magnetic
34. 34.True or false: sugar in warm water dissolves faster. (a) True (b) False
35. 35.True or false: cold water is not needed for the dissolving test. (a) True (b) False
36. 36.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) pour it on the floor (c) do not lick the spoon (d) throw the glass
37. 37.True or false: a feather falls slowly through the air. (a) True (b) False
38. 38.🛟 Does a cork float or sink in water? (a) sinks (b) floats
39. 39.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
40. 40.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the water turns to ice (c) the glass breaks (d) the card stays on

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