Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 844 · 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.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a spoon (c) cooking oil (d) a mirror
2. 2.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is what we measure. (a) False (b) True
3. 3.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a balloon (b) a paper clip (c) safety scissors (d) a pencil
4. 4.⚖️ 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 pouring”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.True or false: a pebble is less dense than water. (a) False (b) True
6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the water temperature (c) the amount of water
7. 7.True or false: a cork is less dense than water. (a) False (b) True
8. 8.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the cling film cover (b) the size of the bowl (c) sun or shade (d) how many drops form
9. 9.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
10. 10.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it dissolves (c) it sinks (d) it bounces up
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a battery cell (d) a sink or a bucket
12. 12.🚁 Dropped from a raised hand, does a coin fall slowly or fast? (a) falls slowly (b) falls fast
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
14. 14.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) yeast (b) a small cup (c) water (d) a big bowl
15. 15.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) yeast (c) turmeric powder (d) a mirror
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is what we measure. (a) True (b) False
17. 17.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
18. 18.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🧺 Which of these is needed for the density tower? (a) a battery cell (b) turmeric powder (c) yeast (d) honey
20. 20.True or false: a coin falls fast through the air. (a) True (b) False
21. 21.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls fast (b) falls slowly
22. 22.True or false: chalk powder does not dissolve in water. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a compass needle (b) a bicycle pump (c) a suction hook (d) a medicine dropper
24. 24.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a spoon (c) honey (d) a battery cell
25. 25.🧺 Do we need a battery cell for the density tower? (a) not needed (b) needed
26. 26.True or false: a ruler is needed for the paper helicopter. (a) True (b) False
27. 27.🧺 Which of these is needed for the density tower? (a) yeast (b) cooking oil (c) a battery cell (d) a magnet
28. 28.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is kept the same. (a) True (b) False
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.True or false: turmeric powder is not needed for the paper helicopter. (a) True (b) False
31. 31.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a drinking straw (c) a vacuum cleaner (d) a suction hook
32. 32.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is kept the same. (a) False (b) True
33. 33.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) warm water (c) cold water (d) a magnet
34. 34.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a magnet (c) a towel for spills (d) small test objects
35. 35.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is what we measure. (a) True (b) False
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) yeast (d) a white flower
37. 37.True or false: small pebbles does not dissolve in water. (a) True (b) False
38. 38.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
39. 39.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a mirror (c) yeast (d) a sunny window
40. 40.🍯 Which of these is less dense than water? (a) a coin (b) very salty water (c) a glass marble (d) an ice cube

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