Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 687 · 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.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) the water turns solid (c) the sugar turns to salt (d) some stays undissolved
2. 2.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) honey (c) a magnet (d) water with food colour
3. 3.🔍 Which layer is on top in the honey-water-oil tower? (a) the spoon (b) coloured water (c) honey (d) cooking oil
4. 4.⚖️ 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 amount of water (b) brightness of rainbow (c) the same glass (d) the same window
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same straw (b) the same string (c) the slope of the string (d) how big we blow it
6. 6.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
7. 7.🛟 Which of these sinks in water? (a) a ball of clay (b) an ice cube (c) an ice-cream stick (d) a cork
8. 8.🧺 Which of these is not needed for the density tower? (a) a spoon (b) water with food colour (c) a tall clear glass (d) turmeric powder
9. 9.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) cold water (c) a magnet (d) warm water
10. 10.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a magnetic chess set (d) a suction hook
11. 11.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is what we measure. (a) False (b) True
12. 12.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) cold water (c) two clear glasses (d) honey
13. 13.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) time to reach the floor (b) the drop height (c) the length of the blades
14. 14.🧺 Which of these is needed for the density tower? (a) a mirror (b) yeast (c) a tall clear glass (d) turmeric powder
15. 15.💧 Which of these is evaporation? (a) a misty bathroom mirror (b) a pond icing over (c) ice becoming water (d) wet hair drying
16. 16.True or false: yeast is needed for the density tower. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) butter going runny (b) ice becoming water (c) making ice lollies (d) snow turning to water
18. 18.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
19. 19.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a white flower (d) a mirror
21. 21.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
22. 22.🚀 Which of these goes forward? (a) water a swimmer pushes (b) gas from the rocket (c) the swimmer (d) air from the balloon
23. 23.🚁 What does the paper helicopter do as it falls? (a) it stays still in air (b) it turns into a ball (c) it spins round (d) it flies upward
24. 24.🧺 Which of these is not needed for the water cycle bowl? (a) a big bowl (b) ice cubes (c) sunlight (d) yeast
25. 25.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is kept the same. (a) False (b) True
26. 26.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we keep it the same (b) we change it (c) we measure it
27. 27.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
28. 28.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the water turns to ice (c) the card flies away (d) the card stays on
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil turns into honey (c) spilled oil is slippery (d) oil attracts magnets
31. 31.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) whether the card stays (b) the way we turn it (c) how full the glass is
32. 32.🔍 Which is the odd one out? (a) a glass marble (b) an open sheet of paper (c) a steel spoon (d) a stone
33. 33.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) two clear glasses (c) a clock or timer (d) warm water
34. 34.🔍 Which is the odd one out? (a) cooking oil (b) sawdust (c) baking soda (d) sand
35. 35.True or false: an open sheet of paper falls fast through the air. (a) True (b) False
36. 36.True or false: air from the balloon goes forward. (a) True (b) False
37. 37.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) air pushing up (c) the cold water (d) a magnet
38. 38.True or false: a misty bathroom mirror is condensation. (a) False (b) True
39. 39.🧺 Which of these is not needed for the float-or-sink test? (a) a balloon (b) a towel for spills (c) a tub of water (d) small test objects
40. 40.True or false: a battery cell is needed for the paper helicopter. (a) True (b) False

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