Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 606 · 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.🔍 Which is the odd one out? (a) a coin (b) an open sheet of paper (c) a steel spoon (d) a stone
2. 2.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) stare at the Sun (d) look at it in a mirror
3. 3.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a fridge magnet (c) a medicine dropper (d) a drinking straw
4. 4.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) some stays undissolved (c) all of it dissolves (d) the sugar turns to salt
5. 5.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) blow it till it bursts (c) aim it at your friend (d) put string round a neck
8. 8.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
9. 9.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) run around the tub (c) leave water on the floor (d) play near a deep pond
10. 10.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is what we measure. (a) False (b) True
11. 11.True or false: a crumpled paper ball falls fast through the air. (a) False (b) True
12. 12.🚁 Which of these falls fast through the air? (a) a fluff of cotton (b) a coin (c) an open sheet of paper (d) a feather
13. 13.🧺 Do we need turmeric powder for the water cycle bowl? (a) needed (b) not needed
14. 14.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) how much of each liquid (b) the order of pouring (c) the order of the layers (d) the same three liquids
15. 15.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) balloons (c) magnets (d) prisms
16. 16.True or false: a glass marble falls fast through the air. (a) True (b) False
17. 17.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a fridge magnet (c) a magnetic pin holder (d) a magnetic chess set
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a stiff postcard (c) a glass of water (d) a mirror
19. 19.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) yeast (b) ice cubes (c) a big bowl (d) cling film
20. 20.⚖️ 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
21. 21.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) escaping air pushes it (c) a magnet pulls it (d) the straw is heavy
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is what we measure. (a) True (b) False
23. 23.🧺 Which of these is needed for the dissolving test? (a) cold water (b) a balloon (c) a mirror (d) a comb
24. 24.🔍 Which is the odd one out? (a) a coin (b) a stone (c) a fluff of cotton (d) a crumpled paper ball
25. 25.🧺 Which of these is not needed for the water cycle bowl? (a) water (b) a balloon (c) ice cubes (d) a small cup
26. 26.🍯 Is a coin denser or less dense than water? (a) less dense than water (b) denser than water
27. 27.🍯 Is a ping-pong ball denser or less dense than water? (a) less dense than water (b) denser than water
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) the stirring (c) time to dissolve
29. 29.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.⚖️ 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 measure it (c) we change it
32. 32.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a sugar cube (d) a steel spoon
33. 33.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the kind of paper (b) the length of the blades (c) time to reach the floor (d) the paper clip
34. 34.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
35. 35.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a compass needle (d) a vacuum cleaner
36. 36.🔮 Predict: you fold the two blades the other way. What changes? (a) it does not fall (b) it turns blue (c) it spins the other way (d) it falls upward
37. 37.🍯 Is honey denser or less dense than water? (a) less dense than water (b) denser than water
38. 38.True or false: a coin floats on water. (a) False (b) True
39. 39.🛟 What should you do with wet floors after the experiment? (a) wipe them dry (b) leave them wet (c) slide on them (d) pour more water
40. 40.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the flat sheet (b) a sheet of glass (c) the crumpled ball (d) neither of them

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