Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 184 · 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? True or false: the same three liquids is what we measure. (a) False (b) True
2. 2.⚖️ 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 same three liquids”? (a) we change it (b) we measure it (c) we keep it the same
3. 3.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) True (b) False
5. 5.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the drop height (b) the person dropping (c) the length of the blades (d) time to reach the floor
6. 6.True or false: gas from the rocket goes forward. (a) True (b) False
7. 7.🌈 In VIBGYOR, what number colour is yellow?
8. 8.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the cap is sticky (c) the bottle is magnetic (d) water is hiding there
9. 9.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
10. 10.True or false: a steel spoon lets water climb up it. (a) False (b) True
11. 11.True or false: a balloon is needed for the float-or-sink test. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) an ice cube (b) a ping-pong ball (c) a pebble (d) a feather
13. 13.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a compass needle (d) a vacuum cleaner
15. 15.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a battery cell (b) a paper clip (c) safety scissors (d) a strip of paper
16. 16.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
17. 17.True or false: a paper clip is needed for the paper helicopter. (a) True (b) False
18. 18.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) honey (c) a balloon (d) a tall clear glass
20. 20.🚀 Which of these goes forward? (a) the rocket (b) water from the oars (c) water a swimmer pushes (d) air from the balloon
21. 21.True or false: a magnet is needed for the paper helicopter. (a) False (b) True
22. 22.🧺 Do we need a battery cell for the density tower? (a) not needed (b) needed
23. 23.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) chew them (c) give them to a baby (d) keep them in your mouth
24. 24.True or false: a paper towel lets water climb up it. (a) True (b) False
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we keep it the same (b) we change it (c) we measure it
26. 26.🍯 Is honey denser or less dense than water? (a) less dense than water (b) denser than water
27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of sugar (b) the amount of water (c) the water temperature (d) time to dissolve
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we measure it (b) we change it (c) we keep it the same
29. 29.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we keep it the same (c) we measure it
31. 31.True or false: a coin is less dense than water. (a) True (b) False
32. 32.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) yeast (c) food colour (d) a glass of water
34. 34.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a balloon rocket (c) a mirror (d) a sundial
35. 35.True or false: a feather falls fast through the air. (a) False (b) True
36. 36.True or false: a compass needle works by magnetism. (a) False (b) True
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a few hours of waiting (c) a glass of water (d) food colour
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we keep it the same (c) we measure it
39. 39.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
40. 40.True or false: ice cubes is not needed for the water cycle bowl. (a) False (b) True

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