Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 901 · 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.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) the sugar turns to salt (c) all of it dissolves (d) the water turns solid
2. 2.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) safety scissors (c) a paper cutter (d) sharp kitchen shears
3. 3.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) it is sprayed on (d) through the air
4. 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.True or false: sawdust dissolves in water. (a) False (b) True
6. 6.True or false: drops under a pot lid is melting. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) a pebble (b) very salty water (c) a glass marble (d) an ice cube
8. 8.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
9. 9.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) poke it with a finger (c) smell it closely (d) taste it
10. 10.🫗 Why does cooking oil float on top of water? (a) oil is hot (b) oil is sticky (c) oil is less dense (d) oil is heavier
11. 11.🧺 Do we need sunlight for the water cycle bowl? (a) not needed (b) needed
12. 12.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) two chairs (c) a long string (d) vinegar
13. 13.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is the one thing we change. (a) False (b) True
14. 14.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
15. 15.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) a battery cell (d) small test objects
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is kept the same. (a) False (b) True
17. 17.🥄 Which of these does not dissolve in water? (a) baking soda (b) sawdust (c) table salt (d) glucose powder
18. 18.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
19. 19.🧺 Which of these is not needed for the balloon rocket? (a) a mirror (b) a drinking straw (c) sticky tape (d) a long string
20. 20.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same window (b) the same glass (c) the amount of water (d) the same white paper
22. 22.🧺 Which of these is needed for the density tower? (a) water with food colour (b) a balloon (c) a battery cell (d) turmeric powder
23. 23.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a suction hook (c) a compass needle (d) a drinking straw
24. 24.🚁 Which of these falls slowly through the air? (a) a coin (b) a steel spoon (c) a feather (d) a glass marble
25. 25.🥛 Which of these works by magnetism? (a) a drinking straw (b) a medicine dropper (c) a magnetic chess set (d) a bicycle pump
26. 26.🛟 Does a feather float or sink in water? (a) sinks (b) floats
27. 27.⚖️ 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 same glass (b) the same three liquids (c) how much of each liquid (d) the order of pouring
28. 28.🧺 Which of these is not needed for the water cycle bowl? (a) a battery cell (b) sunlight (c) ice cubes (d) a small cup
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) False (b) True
30. 30.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) cold water (c) honey (d) two clear glasses
31. 31.🥄 Which of these dissolves in water? (a) glucose powder (b) chalk powder (c) cooking oil (d) small pebbles
32. 32.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a mirror (d) a results table
33. 33.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
34. 34.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
35. 35.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) it turns brighter (d) the rainbow fades
36. 36.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a piece of foil (d) a cotton thread
37. 37.💧 Which change is this: drops on a cold glass? (a) melting (b) freezing (c) condensation (d) evaporation
38. 38.⚖️ 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
39. 39.True or false: a tub of water is needed for the float-or-sink test. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) sugar (b) sawdust (c) glucose powder (d) food colour

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