Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 913 · 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.🧺 Do we need yeast for the paper helicopter? (a) not needed (b) needed
2. 2.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls fast (b) falls slowly
3. 3.True or false: turmeric powder is needed for the balloon rocket. (a) False (b) True
4. 4.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) water with food colour (c) yeast (d) a tall clear glass
5. 5.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.⚖️ 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 measure it (c) we keep it the same
7. 7.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
8. 8.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) a strip of paper (c) a balloon (d) a ruler
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) turmeric powder (d) a battery cell
10. 10.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) a clear glass of water (d) yeast
11. 11.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) play near a deep pond (d) wipe up spills at once
12. 12.🍯 Which of these is denser than water? (a) very salty water (b) cooking oil (c) an ice cube (d) air
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a mirror (c) turmeric powder (d) a white flower
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we change it (b) we measure it (c) we keep it the same
15. 15.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
16. 16.⚖️ 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
17. 17.True or false: a balloon is not needed for the density tower. (a) False (b) True
18. 18.🌊 What pushes a floating cork upward? (a) the cork itself (b) the water (c) the air above (d) the tub
19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) False (b) True
20. 20.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls fast (b) falls slowly
21. 21.🍯 Which of these is denser than water? (a) an ice cube (b) a pebble (c) cooking oil (d) a ping-pong ball
22. 22.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
23. 23.⚖️ 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
24. 24.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) honey (c) water with food colour (d) a mirror
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) False (b) True
27. 27.💧 Which of these is melting? (a) snow turning to water (b) a pond icing over (c) a puddle drying up (d) a misty bathroom mirror
28. 28.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) it changes colour (c) hot water is heavy (d) hot water is magnetic
29. 29.⚖️ 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 keep it the same (b) we measure it (c) we change it
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) False (b) True
31. 31.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the kind of clay (b) the tub of water (c) the amount of clay (d) whether it floats
32. 32.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) balloons (d) clouds
33. 33.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
34. 34.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) a paper cutter (c) gardening shears (d) safety scissors
35. 35.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a medicine dropper
36. 36.⚖️ 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
37. 37.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) a sheet of glass (b) the flat sheet (c) the crumpled ball (d) neither of them
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) True (b) False
39. 39.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
40. 40.⚖️ 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 change it (c) we keep it the same

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