Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 553 · 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: a fridge magnet works by air pressure. (a) True (b) False
2. 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
3. 3.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed
4. 4.🔮 Predict: you add two more paper clips. How does it fall? (a) it stops in the air (b) slower (c) it floats up (d) faster
5. 5.🧺 Which of these is needed for the balloon rocket? (a) sticky tape (b) vinegar (c) yeast (d) a magnet
6. 6.🧺 Which of these is not needed for the paper helicopter? (a) a balloon (b) a paper clip (c) a pencil (d) safety scissors
7. 7.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
8. 8.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) many colours mixed (d) tiny drops of water
9. 9.🔍 Which is the odd one out? (a) a fluff of cotton (b) a paper helicopter (c) a feather (d) a crumpled paper ball
10. 10.💧 Which change is this: a misty bathroom mirror? (a) freezing (b) evaporation (c) condensation (d) melting
11. 11.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a magnet (c) a tub of water (d) a results table
13. 13.🛟 Which of these floats on water? (a) a pebble (b) an iron nail (c) a cork (d) a metal key
14. 14.True or false: yeast is not needed for the water rainbow. (a) True (b) False
15. 15.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is kept the same. (a) False (b) True
16. 16.🥄 Which of these does not dissolve in water? (a) cooking oil (b) baking soda (c) glucose powder (d) table salt
17. 17.🍯 Is honey denser or less dense than water? (a) less dense than water (b) denser than water
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a glass of water (c) a magnet (d) a stiff postcard
19. 19.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a bicycle pump (c) a magnetic pin holder (d) a fridge magnet
20. 20.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) yeast (d) a sheet of white paper
21. 21.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) yeast (c) ice cubes (d) a big bowl
22. 22.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.🔮 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) all of it dissolves (d) some stays undissolved
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) a white flower (d) food colour
25. 25.True or false: a battery cell is not needed for the density tower. (a) False (b) True
26. 26.🍯 Which of these is denser than water? (a) a glass marble (b) air (c) a cork (d) a ping-pong ball
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) whether the card stays (b) the same glass (c) how full the glass is (d) the way we turn it
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a glass of water (d) a few hours of waiting
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) True (b) False
30. 30.💧 Which change is this: ice becoming water? (a) condensation (b) evaporation (c) melting (d) freezing
31. 31.🧺 Which of these is not needed for the balloon rocket? (a) turmeric powder (b) a balloon (c) a long string (d) sticky tape
32. 32.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) it goes faster (c) no change at all (d) more friction, less far
33. 33.⚖️ 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 change it (b) we keep it the same (c) we measure it
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) True (b) False
35. 35.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) water with food colour (c) cooking oil (d) a mirror
36. 36.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
37. 37.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) ice cubes (c) water (d) turmeric powder
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same tape (b) distance it travels (c) the slope of the string (d) how big we blow it
39. 39.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a plastic ruler (d) a sugar cube
40. 40.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we measure it (b) we change it (c) we keep it the same

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