Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 891 · 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.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) blow it till it bursts (c) put string round a neck (d) keep it away from faces
2. 2.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
3. 3.⚖️ 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) the same glass (b) whether the card stays (c) how full the glass is
4. 4.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) play near a deep pond (c) wipe up spills at once (d) run around the tub
5. 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.💧 Which change is this: snow turning to water? (a) melting (b) freezing (c) condensation (d) evaporation
7. 7.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) from your raised hand (c) a wobbly chair (d) a high window ledge
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a mirror (c) a few hours of waiting (d) a white flower
9. 9.⚖️ 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) how much of each liquid (b) the order of pouring (c) the order of the layers
10. 10.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) False (b) True
11. 11.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the stirring (b) time to dissolve (c) the water temperature
12. 12.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it sinks (c) it melts (d) it turns blue
13. 13.🧺 Which of these is not needed for the water cycle bowl? (a) cling film (b) ice cubes (c) water (d) a magnet
14. 14.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls slowly (b) falls fast
15. 15.🛟 Which of these sinks in water? (a) a feather (b) a dry leaf (c) an ice cube (d) an iron nail
16. 16.True or false: water from the oars goes backward. (a) False (b) True
17. 17.⚖️ 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 change it (b) we keep it the same (c) we measure it
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) False (b) True
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the length of the stem (b) the amount of colour (c) time for colour to show (d) the amount of water
21. 21.⚖️ 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 the one thing we change. (a) True (b) False
22. 22.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same straw (b) distance it travels (c) how big we blow it
24. 24.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) distance it travels (b) the same string (c) how big we blow it (d) the slope of the string
25. 25.⚖️ 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 measure it (b) we keep it the same (c) we change it
26. 26.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) slide on them (c) pour more water (d) wipe them dry
27. 27.🧺 Do we need a battery cell for the paper helicopter? (a) not needed (b) needed
28. 28.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it travels less far (c) it goes backward first (d) it travels farther
29. 29.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil turns into honey (c) oil makes it rain (d) oil attracts magnets
30. 30.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to grow plants (d) to catch any spills
31. 31.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) a magnet (c) a big bowl (d) water
32. 32.🧺 Do we need a paper clip for the paper helicopter? (a) not needed (b) needed
33. 33.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
34. 34.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) False (b) True
37. 37.🌈 How many colours do we name in a rainbow (VIBGYOR)?
38. 38.🧺 Which of these is needed for the paper helicopter? (a) a mirror (b) a magnet (c) a paper clip (d) a battery cell
39. 39.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the order of the layers (b) the order of pouring (c) how much of each liquid (d) the same glass
40. 40.True or false: a ruler is needed for the paper helicopter. (a) False (b) True

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