Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 639 · 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 is the odd one out? (a) sawdust (b) glucose powder (c) small pebbles (d) cooking oil
2. 2.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a balloon (c) a mirror (d) turmeric powder
3. 3.🔍 Which is the odd one out? (a) honey (b) a pebble (c) very salty water (d) a cork
4. 4.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) pour it on the floor (c) taste each layer (d) do not lick the spoon
5. 5.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
6. 6.🛟 Where is a safe place to drop the helicopter from? (a) a wobbly chair (b) from your raised hand (c) a high window ledge (d) a roof edge
7. 7.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
8. 8.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
9. 9.True or false: a cotton thread lets water climb up it. (a) True (b) False
10. 10.🛟 How should you check if the sugar has dissolved? (a) taste it (b) look for leftover grains (c) smell it closely (d) poke it with a finger
11. 11.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
12. 12.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a battery cell (c) a magnet (d) a drinking straw
13. 13.⚖️ 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 measure it (b) we keep it the same (c) we change it
14. 14.💧 Which change is this: a pond icing over? (a) evaporation (b) condensation (c) freezing (d) melting
15. 15.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar stirred well (c) sugar in warm water (d) a big sugar cube
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the length of the stem (b) time for colour to show (c) the kind of flower (d) the amount of colour
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) True (b) False
18. 18.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) a magnetic chess set (b) a vacuum cleaner (c) a fridge magnet (d) a magnetic pin holder
20. 20.⚖️ 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 keep it the same (b) we measure it (c) we change it
21. 21.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) reflection (c) refraction (d) evaporation
22. 22.🧺 Which of these is not needed for the density tower? (a) a spoon (b) honey (c) a magnet (d) water with food colour
23. 23.🌈 How many colours do we name in a rainbow (VIBGYOR)?
24. 24.🌈 In VIBGYOR, what number colour is blue?
25. 25.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
26. 26.🎈 What is the job of the straw on the string? (a) it blows air in (b) it holds water (c) it makes it heavier (d) it guides the balloon
27. 27.🔮 Predict: you add two more paper clips. How does it fall? (a) faster (b) it floats up (c) slower (d) it stops in the air
28. 28.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) never look at the Sun (d) look at it through glass
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a balloon (c) a clear glass of water (d) bright sunlight
30. 30.🥄 Which of these dissolves in water? (a) small pebbles (b) glucose powder (c) sand (d) sawdust
31. 31.🧺 Do we need a big bowl for the water cycle bowl? (a) needed (b) not needed
32. 32.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a paper clip (c) a ruler (d) a battery cell
33. 33.🚀 Which of these goes backward? (a) the balloon (b) the rowing boat (c) water from the oars (d) the rocket
34. 34.🔍 Which is the odd one out? (a) a paper helicopter (b) a toy parachute (c) a fluff of cotton (d) a steel spoon
35. 35.True or false: snow turning to water is melting. (a) False (b) True
36. 36.⚖️ 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 change it (c) we keep it the same
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) yeast (d) a balloon
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is what we measure. (a) False (b) True
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a white flower (d) a magnet
40. 40.True or false: yeast is needed for the water rainbow. (a) False (b) True

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