Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 724 · 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 paper helicopter falls fast through the air. (a) True (b) False
2. 2.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
3. 3.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
4. 4.🧺 Which of these is needed for the density tower? (a) yeast (b) a magnet (c) a mirror (d) a spoon
5. 5.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
7. 7.🧺 Which of these is needed for the density tower? (a) a battery cell (b) a tall clear glass (c) a magnet (d) yeast
8. 8.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) food colour (d) a magnet
10. 10.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of pouring (b) the same glass (c) the order of the layers
11. 11.💧 Which of these is condensation? (a) drops on a cold glass (b) ice becoming water (c) wet clothes drying (d) a puddle drying up
12. 12.🔍 What do you see after pouring honey, water and oil into one glass? (a) bubbles of gas (b) one mixed colour (c) three separate layers (d) the glass gets hot
13. 13.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) water is hiding there (d) the bottle is magnetic
14. 14.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) small test objects (c) a towel for spills (d) a results table
15. 15.🧺 Do we need cooking oil for the density tower? (a) needed (b) not needed
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) a few hours of waiting (d) turmeric powder
17. 17.⚖️ 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) whether the card stays (c) the same card (d) how full the glass is
18. 18.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a long string (c) a drinking straw (d) turmeric powder
19. 19.True or false: a misty bathroom mirror is condensation. (a) True (b) False
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of water (b) the room it stands in (c) the length of the stem (d) time for colour to show
21. 21.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) the sugar turns to salt (c) the water turns solid (d) all of it dissolves
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) False (b) True
23. 23.🔍 Sand is stirred into water. What do you see after a while? (a) it settles at the bottom (b) it floats up (c) it turns blue (d) it dissolves
24. 24.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) aim it at your friend (c) blow it till it bursts (d) keep it away from faces
25. 25.True or false: a comb is needed for the dissolving test. (a) True (b) False
26. 26.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is what we measure. (a) True (b) False
28. 28.⚖️ 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 change it (b) we measure it (c) we keep it the same
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) False (b) True
30. 30.True or false: sugar is not needed for the dissolving test. (a) True (b) False
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a ruler (c) a battery cell (d) a paper clip
33. 33.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of pouring (b) how much of each liquid (c) the order of the layers
34. 34.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) leave water on the floor (c) wipe up spills at once (d) run around the tub
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) True (b) False
36. 36.🧺 Do we need ice cubes for the water cycle bowl? (a) not needed (b) needed
37. 37.True or false: a coin is denser than water. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) a paper helicopter (b) a fluff of cotton (c) an open sheet of paper (d) a stone
39. 39.🧺 Which of these is not needed for the balloon rocket? (a) a magnet (b) a balloon (c) a long string (d) sticky tape
40. 40.True or false: a piece of chalk lets water climb up it. (a) False (b) True

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