Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 804 · 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 change is this: drops on a cold glass? (a) freezing (b) melting (c) condensation (d) evaporation
2. 2.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) food colour (d) a mirror
3. 3.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is what we measure. (a) True (b) False
4. 4.🧺 Which of these is not needed for the float-or-sink test? (a) a magnet (b) a results table (c) a tub of water (d) small test objects
5. 5.True or false: a big sugar cube dissolves slower. (a) True (b) False
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we measure it (b) we change it (c) we keep it the same
7. 7.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) run around the tub (c) wipe up spills at once (d) leave water on the floor
8. 8.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the shape of the clay (b) the kind of clay (c) whether it floats (d) the tub of water
10. 10.🌈 How many colours do we name in a rainbow (VIBGYOR)?
11. 11.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) a paper cutter (c) sharp kitchen shears (d) gardening shears
12. 12.🧺 Do we need a balloon for the density tower? (a) needed (b) not needed
13. 13.🛟 Which of these floats on water? (a) a pebble (b) a glass marble (c) a steel spoon (d) an empty capped bottle
14. 14.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) a small cup (c) yeast (d) sunlight
15. 15.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) sticky tape (c) vinegar (d) two chairs
16. 16.🌈 In VIBGYOR, what number colour is yellow?
17. 17.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is what we measure. (a) True (b) False
19. 19.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
20. 20.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: how many drops form is the one thing we change. (a) False (b) True
21. 21.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
22. 22.⚖️ 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 measure it (c) we change it
23. 23.🍯 Is air denser or less dense than water? (a) less dense than water (b) denser than water
24. 24.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a mirror (c) safety scissors (d) a strip of paper
25. 25.⚖️ 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) how full the glass is (c) whether the card stays
26. 26.💧 Which of these is freezing? (a) ice becoming water (b) making ice lollies (c) wet clothes drying (d) drops under a pot lid
27. 27.True or false: water a swimmer pushes goes forward. (a) True (b) False
28. 28.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
30. 30.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.🍯 Which of these is less dense than water? (a) cooking oil (b) very salty water (c) honey (d) a glass marble
32. 32.True or false: ice becoming water is evaporation. (a) False (b) True
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) yeast (d) a glass of water
34. 34.True or false: sugar is not needed for the dissolving test. (a) True (b) False
35. 35.🚁 Dropped from a raised hand, does a paper helicopter fall slowly or fast? (a) falls fast (b) falls slowly
36. 36.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a glass of water (d) a white flower
38. 38.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a mirror (b) water (c) sunlight (d) a big bowl
39. 39.🚁 Why does the paper helicopter fall slowly? (a) air pushes on its blades (b) it has no weight (c) a magnet holds it (d) the floor pushes it
40. 40.🫗 Why does cooking oil float on top of water? (a) oil is heavier (b) oil is sticky (c) oil is hot (d) oil is less dense

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