Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 715 · 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 scissors should children use to cut the paper? (a) safety scissors (b) sharp kitchen shears (c) a paper cutter (d) gardening shears
2. 2.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they mix for ever (b) they turn to honey (c) they become solid (d) they separate again
3. 3.🔍 Which is the odd one out? (a) a dry leaf (b) an ice-cream stick (c) a cork (d) a pebble
4. 4.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
5. 5.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a balloon (c) honey (d) cooking oil
6. 6.⚖️ 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) how many drops form (b) the cling film cover (c) the size of the bowl (d) sun or shade
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a mirror (c) a towel (d) yeast
8. 8.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
9. 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the kind of clay (b) the tub of water (c) whether it floats (d) the amount of clay
10. 10.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) no change at all (c) less friction (d) it goes faster
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a battery cell (d) a few hours of waiting
12. 12.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a balloon (c) a glass of water (d) a stiff postcard
13. 13.True or false: an ice cube sinks in water. (a) False (b) True
14. 14.True or false: a coin is less dense than water. (a) True (b) False
15. 15.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
16. 16.⚖️ 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 length of the stem (b) time for colour to show (c) the room it stands in (d) the kind of flower
17. 17.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) the water turns solid (c) all of it dissolves (d) the sugar turns to salt
18. 18.🧺 Do we need a mirror for the water cycle bowl? (a) needed (b) not needed
19. 19.True or false: a flower stem does not let water climb. (a) False (b) True
20. 20.True or false: water is needed for the water cycle bowl. (a) False (b) True
21. 21.🧺 Do we need a big bowl for the water cycle bowl? (a) needed (b) not needed
22. 22.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
23. 23.⚖️ 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
24. 24.🍯 Which of these is denser than water? (a) honey (b) a cork (c) a ping-pong ball (d) cooking oil
25. 25.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) taste it (c) smell it closely (d) look for leftover grains
26. 26.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a drinking straw (d) a magnetic pin holder
27. 27.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
28. 28.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) wipe up spills at once (d) play near a deep pond
29. 29.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a fridge magnet (d) a bicycle pump
30. 30.💧 Why do water drops form on the outside of a glass of ice water? (a) the glass leaks (b) vapour in air cools (c) ice escapes the glass (d) the glass sweats
31. 31.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same string (b) how big we blow it (c) distance it travels
32. 32.⚖️ 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 “the order of the layers”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.True or false: a magnetic chess set works by magnetism. (a) True (b) False
34. 34.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
35. 35.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it floats higher (c) it sinks (d) it melts
36. 36.🔍 Which is the odd one out? (a) a drinking straw (b) a suction hook (c) a medicine dropper (d) a compass needle
37. 37.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it goes backward first (c) it travels less far (d) it speeds up
38. 38.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) honey (c) cooking oil (d) a battery cell
39. 39.True or false: an open sheet of paper falls slowly through the air. (a) True (b) False
40. 40.🔍 Which layer is on top in the honey-water-oil tower? (a) honey (b) coloured water (c) the spoon (d) cooking oil

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