Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 946 · 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 “the kind of sugar”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.🥄 Which of these dissolves in water? (a) chalk powder (b) glucose powder (c) sawdust (d) cooking oil
3. 3.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
4. 4.⚖️ 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 window (b) the amount of water (c) brightness of rainbow
5. 5.🫗 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
6. 6.True or false: sticky tape is not needed for the balloon rocket. (a) False (b) True
7. 7.🍯 Which of these is denser than water? (a) air (b) cooking oil (c) a ping-pong ball (d) honey
8. 8.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they separate again (b) they become solid (c) they mix for ever (d) they turn to honey
9. 9.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) vinegar (c) a balloon (d) two chairs
10. 10.True or false: sawdust dissolves in water. (a) False (b) True
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the length of the stem (b) the amount of colour (c) time for colour to show (d) the kind of flower
12. 12.True or false: a glass marble falls slowly through the air. (a) False (b) True
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the same glass (c) the amount of water
14. 14.💧 Which of these lets water climb up it? (a) a paper towel (b) a piece of foil (c) a steel spoon (d) a plastic ruler
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the kind of clay (c) the shape of the clay (d) the amount of clay
16. 16.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) a high window ledge (c) a wobbly chair (d) from your raised hand
17. 17.💧 Which change is this: snow turning to water? (a) evaporation (b) condensation (c) freezing (d) melting
18. 18.🍯 Which of these is denser than water? (a) cooking oil (b) an ice cube (c) a ping-pong ball (d) a pebble
19. 19.💧 Which of these lets water climb up it? (a) a cotton thread (b) a steel spoon (c) a plastic ruler (d) a rubber eraser
20. 20.🧺 Do we need honey for the density tower? (a) needed (b) not needed
21. 21.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
22. 22.True or false: a piece of thermocol floats on water. (a) False (b) True
23. 23.🧺 Do we need a magnet for the dissolving test? (a) needed (b) not needed
24. 24.⚖️ 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 keep it the same (b) we change it (c) we measure it
25. 25.True or false: yeast is not needed for the density tower. (a) True (b) False
26. 26.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
27. 27.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
28. 28.True or false: a magnetic chess set works by air pressure. (a) False (b) True
29. 29.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.True or false: baking soda dissolves in water. (a) True (b) False
31. 31.True or false: ice cubes is not needed for the water cycle bowl. (a) True (b) False
32. 32.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
33. 33.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
34. 34.True or false: yeast is not needed for the paper helicopter. (a) True (b) False
35. 35.🍯 Which of these is denser than water? (a) an ice cube (b) very salty water (c) a cork (d) cooking oil
36. 36.⚖️ 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 change it (b) we measure it (c) we keep it the same
37. 37.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) it looks nicer (c) the card gets wet (d) little air left inside
38. 38.True or false: a cork is less dense than water. (a) False (b) True
39. 39.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
40. 40.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a balloon (c) sticky tape (d) yeast

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