Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 925 · 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 sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it travels less far (c) it travels farther (d) it goes backward first
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) False (b) True
4. 4.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) forward (c) straight down (d) it stays still
5. 5.True or false: yeast is not needed for the water rainbow. (a) False (b) True
6. 6.True or false: a drinking straw is needed for the balloon rocket. (a) True (b) False
7. 7.🌊 What pushes a floating cork upward? (a) the air above (b) the tub (c) the water (d) the cork itself
8. 8.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) sharp kitchen shears (c) safety scissors (d) a paper cutter
9. 9.True or false: yeast is not needed for the water cycle bowl. (a) True (b) False
10. 10.True or false: a coin falls fast through the air. (a) False (b) True
11. 11.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is kept the same. (a) False (b) True
12. 12.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
13. 13.🧺 Do we need vinegar for the balloon rocket? (a) not needed (b) needed
14. 14.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
15. 15.True or false: two clear glasses is needed for the dissolving test. (a) False (b) True
16. 16.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed
17. 17.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a mirror (d) a sheet of white paper
18. 18.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a magnet (c) a clear glass of water (d) a sunny window
20. 20.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) a spoon (c) a tall clear glass (d) yeast
21. 21.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they become solid (b) they turn to honey (c) they separate again (d) they mix for ever
22. 22.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the way we turn it (b) how full the glass is (c) the same glass (d) whether the card stays
23. 23.True or false: a glass marble falls slowly through the air. (a) True (b) False
24. 24.🛟 Does a coin float or sink in water? (a) floats (b) sinks
25. 25.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it dissolves (c) it floats (d) it sinks
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we change it (c) we measure it
27. 27.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
28. 28.True or false: a mirror is needed for the density tower. (a) False (b) True
29. 29.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False
30. 30.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a battery cell (c) yeast (d) a towel for spills
31. 31.True or false: a teaspoon is not needed for the dissolving test. (a) True (b) False
32. 32.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) water with food colour (c) a balloon (d) a magnet
33. 33.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) vinegar (c) two chairs (d) a long string
34. 34.🧺 Do we need water for the water cycle bowl? (a) needed (b) not needed
35. 35.🛟 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
36. 36.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water can scald (c) hot water is magnetic (d) hot water is heavy
37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) True (b) False
38. 38.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
39. 39.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) capillary action (d) magnetism
40. 40.🔍 Which is the odd one out? (a) sweat drying on skin (b) making ice lollies (c) a pond icing over (d) water becoming ice

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