Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 219 · 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 balloon rocket. Which one is NOT needed? (a) a balloon (b) a mirror (c) sticky tape (d) a long string
2. 2.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is hot (c) air pushes it up (d) the straw is magnetic
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is kept the same. (a) False (b) True
4. 4.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
5. 5.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a suction hook (c) a bicycle pump (d) a magnetic chess set
6. 6.🧺 Which of these is needed for the water cycle bowl? (a) cling film (b) a mirror (c) yeast (d) a balloon
7. 7.⚖️ 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 the one thing we change. (a) True (b) False
8. 8.🛟 Which of these floats on water? (a) a glass marble (b) a coin (c) a dry leaf (d) a ball of clay
9. 9.🧺 Do we need a magnet for the paper helicopter? (a) not needed (b) needed
10. 10.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it in a mirror (d) look at it through glass
11. 11.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
12. 12.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
13. 13.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a teaspoon (c) warm water (d) honey
14. 14.🛟 Does a feather float or sink in water? (a) sinks (b) floats
15. 15.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) warm water (c) cotton wool (d) a clock or timer
16. 16.True or false: a mirror is needed for the dissolving test. (a) True (b) False
17. 17.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
18. 18.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
19. 19.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it sank as sand (c) it spread in the water (d) it vanished for ever
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) both of them (c) the small pebble (d) neither of them
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) how big we blow it (b) the slope of the string (c) the same straw (d) distance it travels
23. 23.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.🧺 Do we need a battery cell for the water cycle bowl? (a) needed (b) not needed
25. 25.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is the one thing we change. (a) True (b) False
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
28. 28.⚖️ 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 change it (b) we measure it (c) we keep it the same
29. 29.🎈 When does the balloon rocket stop? (a) it never stops (b) when it gets cold (c) when it turns blue (d) when the air runs out
30. 30.🔮 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 stay white (c) they turn two colours (d) they fall off at once
31. 31.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of chalk (c) a rubber eraser (d) a steel spoon
32. 32.True or false: a pebble sinks in water. (a) True (b) False
33. 33.True or false: an ice-cream stick floats on water. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) a glass marble (b) a coin (c) honey (d) cooking oil
35. 35.🚁 Which of these falls slowly through the air? (a) a toy parachute (b) a steel spoon (c) a coin (d) a glass marble
36. 36.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a spoon (c) yeast (d) cooking oil
37. 37.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) glue on the card (d) the cold water
38. 38.True or false: a feather floats on water. (a) False (b) True
39. 39.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) yeast (c) a drinking straw (d) sticky tape
40. 40.True or false: the swimmer goes forward. (a) False (b) True

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