Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 765 · 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.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
2. 2.True or false: warm water is needed for the dissolving test. (a) True (b) False
3. 3.🧺 Which of these is not needed for the density tower? (a) turmeric powder (b) honey (c) cooking oil (d) a tall clear glass
4. 4.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) two chairs (c) a magnet (d) a balloon
5. 5.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) a towel for spills (d) a battery cell
6. 6.🧺 Which of these is needed for the density tower? (a) a balloon (b) a mirror (c) a magnet (d) a spoon
7. 7.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a results table (c) a tub of water (d) a magnet
8. 8.True or false: a magnetic chess set works by magnetism. (a) False (b) True
9. 9.🥄 Which of these does not dissolve in water? (a) food colour (b) baking soda (c) glucose powder (d) cooking oil
10. 10.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) True (b) False
11. 11.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) time to reach the floor (b) the person dropping (c) the length of the blades
13. 13.🔍 Which is the odd one out? (a) a ping-pong ball (b) an ice cube (c) very salty water (d) air
14. 14.🧺 Which of these is not needed for the dissolving test? (a) a mirror (b) two clear glasses (c) a teaspoon (d) warm water
15. 15.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
16. 16.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) honey (c) cotton wool (d) a teaspoon
17. 17.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
18. 18.True or false: chalk powder does not dissolve in water. (a) False (b) True
19. 19.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to cool the glass (d) to catch any spills
21. 21.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a plastic ruler (d) a sugar cube
22. 22.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same string (b) how big we blow it (c) distance it travels
24. 24.⚖️ 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) the same three liquids (b) the same glass (c) the order of the layers (d) how much of each liquid
25. 25.⚖️ 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) how full the glass is (c) the same glass (d) the same card
26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the order of pouring (b) the same three liquids (c) how much of each liquid (d) the same glass
28. 28.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) it goes faster (c) no change at all (d) more friction, less far
29. 29.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) fewer drops form (b) the bowl freezes (c) more drops form (d) the water turns red
30. 30.True or false: gas from the rocket goes forward. (a) True (b) False
31. 31.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
32. 32.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) warm water (c) a teaspoon (d) cotton wool
33. 33.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls slowly (b) falls fast
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) distance it travels (c) the same tape (d) how big we blow it
35. 35.True or false: water from the oars goes forward. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) a flower stem (b) a plastic ruler (c) a sugar cube (d) a cotton thread
37. 37.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a magnet (c) a small rainbow (d) snow falling
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we keep it the same (b) we measure it (c) we change it
39. 39.🌈 How many colours do we name in a rainbow (VIBGYOR)?
40. 40.⚖️ 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

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