Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 883 · 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 the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) brightness of rainbow (b) the same window (c) the same white paper (d) the amount of water
2. 2.True or false: a paper clip is needed for the paper helicopter. (a) False (b) True
3. 3.🧺 Which of these is not needed for the paper helicopter? (a) a ruler (b) a strip of paper (c) yeast (d) a paper clip
4. 4.🧺 Which of these is needed for the water cycle bowl? (a) a battery cell (b) sunlight (c) yeast (d) a magnet
5. 5.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) vinegar (c) turmeric powder (d) sticky tape
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a magnet (c) food colour (d) a white flower
7. 7.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a battery cell (c) a balloon (d) a magnet
8. 8.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) cooking oil (c) honey (d) a magnet
9. 9.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a small rainbow (d) a magnet
10. 10.🔮 Predict: you add two more paper clips. How does it fall? (a) faster (b) it stops in the air (c) it floats up (d) slower
11. 11.True or false: cooking oil is less dense than water. (a) False (b) True
12. 12.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a balloon (b) a spoon (c) cooking oil (d) honey
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) yeast (d) a sunny window
14. 14.🚀 Which of these goes backward? (a) the rocket (b) the rowing boat (c) the balloon (d) gas from the rocket
15. 15.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) under the honey (c) in the water layer (d) on top of the oil
16. 16.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the stirring (b) time to dissolve (c) the water temperature
17. 17.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
18. 18.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it dissolves (c) it sinks (d) it bounces up
19. 19.🔍 Which is the odd one out? (a) a fridge magnet (b) a vacuum cleaner (c) a magnetic chess set (d) a magnetic pin holder
20. 20.🍯 Is air denser or less dense than water? (a) denser than water (b) less dense than water
21. 21.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to salt (b) it turns to smoke (c) it turns to drops (d) it disappears
22. 22.⚖️ 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 glass”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.True or false: a piece of thermocol sinks in water. (a) False (b) True
24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the stirring (b) the kind of sugar (c) time to dissolve (d) the amount of water
25. 25.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) the tub of water (c) whether it floats
27. 27.🔍 Which is the odd one out? (a) a paper helicopter (b) a fluff of cotton (c) an open sheet of paper (d) a stone
28. 28.🧺 Which of these is not needed for the density tower? (a) a battery cell (b) a spoon (c) water with food colour (d) honey
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 order of the layers”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
31. 31.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) a battery cell (d) a sunny window
33. 33.True or false: baking soda does not dissolve in water. (a) False (b) True
34. 34.🛟 Does a ball of clay float or sink in water? (a) sinks (b) floats
35. 35.🔍 Which is the odd one out? (a) a glass marble (b) very salty water (c) cooking oil (d) a coin
36. 36.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
37. 37.🚁 Why does the paper helicopter fall slowly? (a) the floor pushes it (b) a magnet holds it (c) it has no weight (d) air pushes on its blades
38. 38.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
39. 39.⚖️ 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
40. 40.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a few ice cubes (c) a little shaking (d) lots of salt stirred in

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