Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 511 · 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.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) a long string (d) a mirror
2. 2.⚖️ 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 what we measure. (a) True (b) False
3. 3.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) a clock or timer (c) a comb (d) two clear glasses
4. 4.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a battery cell (b) a sink or a bucket (c) a towel (d) a glass of water
5. 5.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) a drinking straw (c) two chairs (d) sticky tape
6. 6.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) honey (c) yeast (d) water with food colour
7. 7.🍯 Is an ice cube denser or less dense than water? (a) denser than water (b) less dense than water
8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we keep it the same (c) we change it
9. 9.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a balloon (b) a towel for spills (c) a results table (d) small test objects
10. 10.🧺 Do we need warm water for the dissolving test? (a) needed (b) not needed
11. 11.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a mirror (b) honey (c) a spoon (d) water with food colour
12. 12.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is what we measure. (a) True (b) False
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the same glass (c) the same white paper (d) the same window
14. 14.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) both of them (c) neither of them (d) the big log
15. 15.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) a clock or timer (c) a balloon (d) sugar
16. 16.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it floats up (c) it dissolves (d) it settles at the bottom
17. 17.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) turmeric powder (c) sticky tape (d) a battery cell
18. 18.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
19. 19.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the sugar turns to salt (b) the water turns solid (c) some stays undissolved (d) all of it dissolves
20. 20.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) poke it with a finger (c) taste it (d) look for leftover grains
21. 21.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) balloons (d) magnets
22. 22.🔮 Predict: you add two more paper clips. How does it fall? (a) slower (b) it floats up (c) it stops in the air (d) faster
23. 23.🌈 How many colours do we name in a rainbow (VIBGYOR)?
24. 24.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) rain (b) sunshine (c) wind (d) lightning
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) yeast
26. 26.True or false: an ice-cream stick floats on water. (a) True (b) False
27. 27.💧 Which of these lets water climb up it? (a) a sugar cube (b) a glass marble (c) a rubber eraser (d) a steel spoon
28. 28.🧺 Which of these is not needed for the water cycle bowl? (a) a balloon (b) a big bowl (c) water (d) a small cup
29. 29.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) False (b) True
31. 31.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) the glass is painted (d) water splits the light
32. 32.🚀 Which of these goes backward? (a) the balloon (b) the rocket (c) water from the oars (d) the swimmer
33. 33.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is kept the same. (a) True (b) False
34. 34.⚖️ 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) the same card (c) whether the card stays (d) how full the glass is
35. 35.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
36. 36.True or false: a ruler is needed for the paper helicopter. (a) False (b) True
37. 37.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
38. 38.🔍 Which is the odd one out? (a) a coin (b) an iron nail (c) a ball of clay (d) a cork
39. 39.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
40. 40.⚖️ 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 time of day (b) the same glass (c) the same white paper (d) the amount of water

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