Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 608 · 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.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
2. 2.True or false: baking soda does not dissolve in water. (a) False (b) True
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) False (b) True
4. 4.🛟 Does a cork float or sink in water? (a) sinks (b) floats
5. 5.🔍 Which is the odd one out? (a) a pond icing over (b) making ice lollies (c) water becoming ice (d) a misty bathroom mirror
6. 6.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) cooking oil (c) yeast (d) a spoon
7. 7.🛟 What should you do with wet floors after the experiment? (a) wipe them dry (b) pour more water (c) slide on them (d) leave them wet
8. 8.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is kept the same. (a) False (b) True
9. 9.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls fast (b) falls slowly
10. 10.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) a spoon (c) a tall clear glass (d) a balloon
11. 11.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show
12. 12.⚖️ 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 kind of clay (d) the tub of water
13. 13.🔍 Which is the odd one out? (a) a steel spoon (b) a crumpled paper ball (c) a stone (d) a feather
14. 14.🌈 How many colours do we name in a rainbow (VIBGYOR)?
15. 15.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
16. 16.💧 Which of these is condensation? (a) ice becoming water (b) dew on morning grass (c) snow turning to water (d) water becoming ice
17. 17.🔍 Which layer is on top in the honey-water-oil tower? (a) coloured water (b) honey (c) cooking oil (d) the spoon
18. 18.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
19. 19.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the water layer (b) at the very bottom (c) on top of the oil (d) in the oil layer
20. 20.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) small test objects (c) a towel for spills (d) a tub of water
21. 21.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) a towel (d) yeast
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) turmeric powder (d) a few hours of waiting
24. 24.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) slower (c) not at all (d) faster
25. 25.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
26. 26.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) sticky tape (c) vinegar (d) a long string
27. 27.⚖️ 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) how full the glass is (d) whether the card stays
28. 28.💧 Which change is this: ice becoming water? (a) condensation (b) evaporation (c) freezing (d) melting
29. 29.🔍 Which is the odd one out? (a) a steel spoon (b) a coin (c) an ice cube (d) a metal key
30. 30.⚖️ 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 “how much of each liquid”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🧺 Do we need turmeric powder for the water cycle bowl? (a) needed (b) not needed
32. 32.💧 Which of these is evaporation? (a) wet clothes drying (b) dew on morning grass (c) drops under a pot lid (d) water becoming ice
33. 33.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so the Sun moves (d) so it turns blue
34. 34.True or false: a cork is denser than water. (a) False (b) True
35. 35.🧺 Do we need a battery cell for the water cycle bowl? (a) needed (b) not needed
36. 36.True or false: a paper towel does not let water climb. (a) True (b) False
37. 37.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
38. 38.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is what we measure. (a) True (b) False
39. 39.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the size of the bowl (b) the amount of water (c) sun or shade (d) how many drops form
40. 40.🥄 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) cooking oil (d) food colour

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