Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 448 · 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 — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) how many drops form (b) sun or shade (c) the cling film cover
3. 3.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) balloons (c) magnets (d) clouds
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) the room it stands in (c) time for colour to show
5. 5.🧺 Which of these is needed for the dissolving test? (a) honey (b) cotton wool (c) a magnet (d) two clear glasses
6. 6.True or false: a glass marble sinks in water. (a) False (b) True
7. 7.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a tub of water (d) a magnet
8. 8.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
9. 9.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
10. 10.⚖️ 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 keep it the same (b) we change it (c) we measure it
11. 11.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls slowly (b) falls fast
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the way we turn it (b) the same glass (c) the same card (d) how full the glass is
13. 13.⚖️ 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 measure it (b) we change it (c) we keep it the same
14. 14.💧 Which of these lets water climb up it? (a) a glass marble (b) a flower stem (c) a steel spoon (d) a rubber eraser
15. 15.🍯 Is a ping-pong ball denser or less dense than water? (a) less dense than water (b) denser than water
16. 16.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it turns into a kite (c) it gets too heavy (d) it changes colour
17. 17.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a battery cell (c) a towel for spills (d) a results table
18. 18.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is kept the same. (a) False (b) True
21. 21.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a balloon (c) yeast (d) sticky tape
22. 22.🍯 Which of these is less dense than water? (a) a pebble (b) a cork (c) a coin (d) a glass marble
23. 23.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to catch any spills (d) to cool the glass
24. 24.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
25. 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we keep it the same (b) we measure it (c) we change it
26. 26.🧺 Do we need turmeric powder for the density tower? (a) needed (b) not needed
27. 27.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the water layer (b) in the oil layer (c) on top of the oil (d) at the very bottom
29. 29.True or false: a steel spoon falls fast through the air. (a) False (b) True
30. 30.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) True (b) False
31. 31.True or false: a drinking straw is needed for the balloon rocket. (a) False (b) True
32. 32.True or false: a battery cell is needed for the water cycle bowl. (a) False (b) True
33. 33.True or false: sugar is not needed for the dissolving test. (a) False (b) True
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the time of day (b) the amount of water (c) brightness of rainbow (d) the same glass
35. 35.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) in the honey layer (c) under the honey (d) on top of the oil
36. 36.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar left unstirred (c) powdered sugar (d) sugar stirred well
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a magnet (c) a sheet of white paper (d) a clear glass of water
38. 38.🧺 Which of these is needed for the water cycle bowl? (a) yeast (b) a magnet (c) ice cubes (d) turmeric powder
39. 39.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a suction hook (d) a magnetic pin holder
40. 40.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a mirror (c) a clear glass of water (d) a magnet

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