Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 415 · 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.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
2. 2.🥄 Which of these dissolves faster? (a) powdered sugar (b) a big sugar cube (c) sugar in icy water (d) sugar left unstirred
3. 3.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a balloon (c) bright sunlight (d) a mirror
4. 4.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
5. 5.🔍 Which is the odd one out? (a) an ice cube (b) a ping-pong ball (c) honey (d) cooking oil
6. 6.🧺 Do we need a balloon for the paper helicopter? (a) not needed (b) needed
7. 7.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a strip of cloth (d) a piece of foil
8. 8.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil attracts magnets (c) oil turns into honey (d) spilled oil is slippery
9. 9.⚖️ 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 “how much of each liquid”? (a) we measure it (b) we change it (c) we keep it the same
10. 10.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
11. 11.🧺 Which of these is needed for the paper helicopter? (a) safety scissors (b) yeast (c) turmeric powder (d) a magnet
12. 12.True or false: a suction hook works by magnetism. (a) False (b) True
13. 13.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to splash everyone (c) to win a prize (d) to keep children safe
14. 14.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same three liquids (b) how much of each liquid (c) the order of pouring (d) the same glass
15. 15.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the crumpled ball (b) the flat sheet (c) a sheet of glass (d) neither of them
16. 16.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
17. 17.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a tub of water (c) a balloon (d) yeast
18. 18.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
19. 19.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) sea water is warm (c) its hollow shape (d) it has a magnet
20. 20.🧺 Do we need yeast for the density tower? (a) not needed (b) needed
21. 21.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to smoke (b) it turns to drops (c) it disappears (d) it turns to salt
22. 22.⚖️ 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 same three liquids”? (a) we keep it the same (b) we change it (c) we measure it
23. 23.True or false: a fridge magnet works by air pressure. (a) True (b) False
24. 24.💧 Which of these is freezing? (a) drops under a pot lid (b) drops on a cold glass (c) a misty bathroom mirror (d) making ice lollies
25. 25.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a magnetic pin holder (d) a vacuum cleaner
26. 26.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
27. 27.True or false: turmeric powder is not needed for the paper helicopter. (a) True (b) False
28. 28.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
29. 29.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is the one thing we change. (a) True (b) False
30. 30.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) wipe them dry (c) pour more water (d) slide on them
31. 31.True or false: baking soda does not dissolve in water. (a) False (b) True
32. 32.True or false: wet clothes drying is condensation. (a) True (b) False
33. 33.🍯 Why does honey sink to the bottom of the glass? (a) it is yellow (b) it is the densest (c) it is the coldest (d) it is the stickiest
34. 34.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the amount of clay
35. 35.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a mirror (b) a strip of paper (c) a pencil (d) safety scissors
36. 36.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it can pop loudly (c) it changes colour (d) it gets too heavy
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) time for colour to show (c) the amount of colour
38. 38.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) it floats away (d) the rainbow fades
39. 39.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) how many drops form (b) the time we wait (c) the cling film cover (d) sun or shade
40. 40.True or false: ice becoming water is melting. (a) False (b) True

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