Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 496 · 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.⚖️ 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 same three liquids (b) the order of pouring (c) how much of each liquid (d) the order of the layers
2. 2.🧺 Which of these is needed for the paper helicopter? (a) a strip of paper (b) a balloon (c) a battery cell (d) a mirror
3. 3.🧺 Do we need a balloon for the dissolving test? (a) not needed (b) needed
4. 4.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) through tiny stem tubes (d) it is sprayed on
5. 5.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the crumpled ball (b) neither of them (c) the flat sheet (d) a sheet of glass
6. 6.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
7. 7.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) steel is very light (c) it has a magnet (d) sea water is warm
8. 8.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a stiff postcard (d) yeast
10. 10.True or false: sugar is needed for the dissolving test. (a) True (b) False
11. 11.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) it sinks at once (d) colour climbs up it
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) True (b) False
13. 13.🧺 Do we need ice cubes for the water cycle bowl? (a) not needed (b) needed
14. 14.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to ice (b) some water evaporates (c) the water increases (d) it turns to salt
15. 15.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the length of the blades (b) the kind of paper (c) the person dropping (d) the drop height
16. 16.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil attracts magnets (c) oil makes it rain (d) oil turns into honey
17. 17.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the bowl freezes (b) fewer drops form (c) the water turns red (d) more drops form
18. 18.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
19. 19.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a mirror (c) a balloon rocket (d) a sundial
20. 20.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) play near a deep pond (d) wipe up spills at once
21. 21.🧺 Which of these is needed for the water cycle bowl? (a) a mirror (b) yeast (c) a battery cell (d) cling film
22. 22.True or false: water from the oars goes forward. (a) True (b) False
23. 23.🚁 Which of these falls fast through the air? (a) a paper helicopter (b) a toy parachute (c) an open sheet of paper (d) a steel spoon
24. 24.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a strip of paper (c) a paper clip (d) a mirror
25. 25.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls fast (b) falls slowly
26. 26.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
27. 27.True or false: a pencil is needed for the paper helicopter. (a) True (b) False
28. 28.🌈 In VIBGYOR, what number colour is indigo?
29. 29.⚖️ 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
30. 30.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they turn to ice (b) they never dry (c) faster (d) slower
31. 31.🌈 In VIBGYOR, what number colour is orange?
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the amount of clay (c) the shape of the clay
33. 33.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a magnet (c) a balloon (d) a drinking straw
34. 34.🧺 Which of these is needed for the dissolving test? (a) honey (b) sugar (c) a magnet (d) a comb
35. 35.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is kept the same. (a) False (b) True
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we measure it (b) we change it (c) we keep it the same
37. 37.True or false: a paper towel lets water climb up it. (a) False (b) True
38. 38.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it turns to stone (c) it can float (d) it sinks faster
39. 39.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
40. 40.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a tub of water (d) a magnet

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