Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 60 · 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.🧺 Do we need cold water for the dissolving test? (a) needed (b) not needed
2. 2.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a coin (d) a feather
3. 3.True or false: powdered sugar dissolves slower. (a) False (b) True
4. 4.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a clear glass of water (d) a battery cell
5. 5.True or false: a compass needle works by magnetism. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) water becoming ice (b) making ice lollies (c) snow turning to water (d) a pond icing over
7. 7.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a balloon (b) small test objects (c) a tub of water (d) a results table
8. 8.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
9. 9.True or false: a cotton thread does not let water climb. (a) True (b) False
10. 10.🍯 Which of these is denser than water? (a) cooking oil (b) a ping-pong ball (c) a glass marble (d) an ice cube
11. 11.🔍 Which is the odd one out? (a) a misty bathroom mirror (b) drops on a cold glass (c) drops under a pot lid (d) sweat drying on skin
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) True (b) False
13. 13.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil attracts magnets (c) oil turns into honey (d) spilled oil is slippery
14. 14.⚖️ 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 measure it (b) we keep it the same (c) we change it
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the kind of flower (b) the amount of colour (c) the length of the stem (d) the amount of water
16. 16.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
18. 18.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
19. 19.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a balloon rocket (b) a sundial (c) a mirror (d) a fridge magnet
20. 20.🌊 What pushes a floating cork upward? (a) the cork itself (b) the tub (c) the air above (d) the water
21. 21.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
22. 22.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
23. 23.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) two chairs (c) a drinking straw (d) a battery cell
24. 24.🍯 Which of these is less dense than water? (a) a glass marble (b) very salty water (c) air (d) honey
25. 25.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
26. 26.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they fall off at once (d) they stay white
27. 27.⚖️ 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 kept the same. (a) True (b) False
28. 28.🧺 Which of these is needed for the density tower? (a) a battery cell (b) a balloon (c) cooking oil (d) turmeric powder
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) turmeric powder (c) a balloon (d) a towel for spills
31. 31.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
32. 32.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the way we turn it (b) how full the glass is (c) whether the card stays (d) the same glass
33. 33.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a tub of water (c) a battery cell (d) a magnet
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the slope of the string (b) the same tape (c) distance it travels (d) the same string
36. 36.True or false: a plastic ruler does not let water climb. (a) False (b) True
37. 37.True or false: a magnet is needed for the dissolving test. (a) True (b) False
38. 38.🥄 Which of these dissolves in water? (a) chalk powder (b) small pebbles (c) sand (d) glucose powder
39. 39.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) the bottle is magnetic (d) water is hiding there
40. 40.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the amount of clay

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