Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 343 · 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 — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of the layers (b) the order of pouring (c) the same glass
2. 2.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) in the water layer (c) on top of the oil (d) under the honey
3. 3.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
4. 4.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
5. 5.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns brighter (d) it turns all red
6. 6.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed
7. 7.🚁 Which of these falls slowly through the air? (a) a steel spoon (b) a coin (c) a glass marble (d) a paper helicopter
8. 8.🧺 Do we need a magnet for the paper helicopter? (a) not needed (b) needed
9. 9.True or false: two chairs is not needed for the balloon rocket. (a) False (b) True
10. 10.True or false: sugar dissolves in water. (a) False (b) True
11. 11.🧺 Which of these is needed for the paper helicopter? (a) yeast (b) a strip of paper (c) a battery cell (d) a balloon
12. 12.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
13. 13.🔍 Which is the odd one out? (a) water becoming ice (b) making ice lollies (c) a pond icing over (d) wet clothes drying
14. 14.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a shadow of ice (d) a magnet
15. 15.⚖️ 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 order of the layers”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a magnet (d) a glass of water
17. 17.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we measure it (b) we keep it the same (c) we change it
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 keep it the same (b) we change it (c) we measure it
19. 19.🔍 You drop a coin into a tub of water. What do you see? (a) it sinks (b) it bounces up (c) it dissolves (d) it floats
20. 20.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
21. 21.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
22. 22.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) stare at the Sun (d) look at it through glass
24. 24.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) colour climbs up it (d) it sinks at once
25. 25.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) hot water is heavy (c) it changes colour (d) hot water can scald
26. 26.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) small test objects (d) a battery cell
27. 27.🍯 Which of these is less dense than water? (a) a pebble (b) air (c) a glass marble (d) very salty water
28. 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the amount of clay (b) the shape of the clay (c) the kind of clay (d) the tub of water
29. 29.🥄 Which of these dissolves slower? (a) a big sugar cube (b) sugar stirred well (c) sugar in warm water (d) powdered sugar
30. 30.True or false: a comb is needed for the dissolving test. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) ice becoming water (b) water becoming ice (c) snow turning to water (d) butter going runny
32. 32.💧 Which change is this: a puddle drying up? (a) melting (b) freezing (c) evaporation (d) condensation
33. 33.🛟 Which of these floats on water? (a) a metal key (b) a coin (c) a steel spoon (d) a dry leaf
34. 34.🔍 Which is the odd one out? (a) an ice cube (b) a coin (c) cooking oil (d) a ping-pong ball
35. 35.🧺 Do we need cooking oil for the density tower? (a) needed (b) not needed
36. 36.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) balloons (c) prisms (d) clouds
37. 37.True or false: a balloon is not needed for the dissolving test. (a) True (b) False
38. 38.⚖️ 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 change it (b) we measure it (c) we keep it the same
39. 39.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) more plain water (c) a little shaking (d) lots of salt stirred in
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we measure it (c) we keep it the same

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