Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 998 · 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.🍯 Is a glass marble denser or less dense than water? (a) less dense than water (b) denser than water
2. 2.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
3. 3.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a balloon (b) a pencil (c) a strip of paper (d) a paper clip
4. 4.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) leave water on the floor (c) wipe up spills at once (d) run around the tub
5. 5.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is kept the same. (a) True (b) False
6. 6.True or false: dew on morning grass is evaporation. (a) False (b) True
7. 7.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) magnetism (d) refraction
8. 8.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) True (b) False
9. 9.True or false: vinegar is not needed for the balloon rocket. (a) False (b) True
10. 10.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
11. 11.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
12. 12.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) on top of the oil (b) in the honey layer (c) in the water layer (d) under the honey
13. 13.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a long string (c) sticky tape (d) yeast
14. 14.🚀 Which of these goes forward? (a) the rocket (b) water a swimmer pushes (c) air from the balloon (d) gas from the rocket
15. 15.🌈 How many colours do we name in a rainbow (VIBGYOR)?
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a white flower (d) a balloon
17. 17.True or false: food colour does not dissolve in water. (a) False (b) True
18. 18.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
19. 19.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the shape of the clay (c) the tub of water (d) the amount of clay
20. 20.🔍 Which is the odd one out? (a) an ice cube (b) air (c) a glass marble (d) a ping-pong ball
21. 21.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) throw the glass (c) do not lick the spoon (d) pour it on the floor
22. 22.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the length of the blades (b) time to reach the floor (c) the kind of paper (d) the person dropping
23. 23.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) cold water (c) warm water (d) a magnet
24. 24.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it flies off the string (c) it turns into a kite (d) it goes less far
25. 25.True or false: turmeric powder is needed for the water cycle bowl. (a) False (b) True
26. 26.🧺 Which of these is needed for the balloon rocket? (a) a drinking straw (b) a mirror (c) a battery cell (d) a magnet
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is the one thing we change. (a) False (b) True
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.⚖️ 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) time for colour to show (c) the kind of flower
30. 30.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
31. 31.True or false: a balloon is needed for the balloon rocket. (a) True (b) False
32. 32.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
33. 33.True or false: a ping-pong ball sinks in water. (a) True (b) False
34. 34.True or false: a battery cell is needed for the water cycle bowl. (a) True (b) False
35. 35.⚖️ 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) the same white paper (b) the amount of water (c) the time of day (d) the same glass
36. 36.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a sheet of white paper (c) a mirror (d) yeast
37. 37.🧺 Do we need a ruler for the paper helicopter? (a) not needed (b) needed
38. 38.True or false: a battery cell is needed for the density tower. (a) True (b) False
39. 39.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card flies away (c) the card stays on (d) the water turns to ice
40. 40.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) a magnet (c) vinegar (d) a long string

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