Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 928 · 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 of these is not needed for the paper helicopter? (a) a strip of paper (b) a pencil (c) yeast (d) safety scissors
2. 2.🧺 Which of these is not needed for the paper helicopter? (a) a mirror (b) a strip of paper (c) safety scissors (d) a pencil
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) a magnet (d) a glass of water
4. 4.🌈 In VIBGYOR, what number colour is violet?
5. 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we keep it the same (c) we change it
6. 6.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
7. 7.🔮 Predict: you fold the two blades the other way. What changes? (a) it turns blue (b) it falls upward (c) it spins the other way (d) it does not fall
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a white flower (d) a battery cell
9. 9.🍯 Which of these is less dense than water? (a) honey (b) an ice cube (c) a glass marble (d) a pebble
10. 10.True or false: a cotton thread lets water climb up it. (a) True (b) False
11. 11.True or false: a battery cell is needed for the balloon rocket. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) a cork (b) cooking oil (c) very salty water (d) a ping-pong ball
13. 13.🧺 Which of these is needed for the paper helicopter? (a) yeast (b) a balloon (c) a paper clip (d) a mirror
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) True (b) False
15. 15.🛟 Which of these sinks in water? (a) an ice-cream stick (b) an empty capped bottle (c) a pebble (d) a cork
16. 16.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
17. 17.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is kept the same. (a) False (b) True
18. 18.⚖️ 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 measure it (b) we keep it the same (c) we change it
19. 19.🧺 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) turmeric powder
20. 20.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the stirring (b) the water temperature (c) the amount of sugar (d) the amount of water
21. 21.⚖️ 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 measure it (b) we change it (c) we keep it the same
22. 22.🍯 Why does honey sink to the bottom of the glass? (a) it is yellow (b) it is the densest (c) it is the stickiest (d) it is the coldest
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) the same window (c) brightness of rainbow
24. 24.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is the one thing we change. (a) True (b) False
25. 25.🧺 Which of these is needed for the density tower? (a) yeast (b) a battery cell (c) a magnet (d) a tall clear glass
26. 26.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) on top of the oil (c) in the honey layer (d) under the honey
27. 27.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) the straw is heavy (c) escaping air pushes it (d) a magnet pulls it
28. 28.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a towel for spills (d) a mirror
29. 29.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) yellow (d) orange
30. 30.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) cotton wool (c) sugar (d) a teaspoon
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a few hours of waiting (c) a glass of water (d) a white flower
32. 32.True or false: a ping-pong ball sinks in water. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a cotton thread (d) a glass marble
34. 34.🔍 How can you get the salt back from salty water? (a) stir it more (b) keep it in a fridge (c) add more water (d) let the water evaporate
35. 35.🔍 Which is the odd one out? (a) drops on a cold glass (b) drops under a pot lid (c) a misty bathroom mirror (d) water becoming ice
36. 36.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) never look at the Sun (d) look at it in a mirror
37. 37.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
38. 38.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) small test objects (c) a results table (d) a balloon
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a sugar cube (d) a plastic ruler

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