Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 601 · 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.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it dissolves (c) it settles at the bottom (d) it floats up
2. 2.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a few hours of waiting (d) a glass of water
3. 3.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the same card (b) the way we turn it (c) the same glass (d) whether the card stays
4. 4.🛟 Does a piece of thermocol float or sink in water? (a) sinks (b) floats
5. 5.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) all of it dissolves (c) the sugar turns to salt (d) some stays undissolved
6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.🛟 Does a feather float or sink in water? (a) floats (b) sinks
8. 8.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) two clear glasses (c) a teaspoon (d) a balloon
9. 9.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
10. 10.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
11. 11.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
12. 12.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a tub of water (c) a magnet (d) yeast
13. 13.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the length of the blades (b) time to reach the floor (c) the paper clip
14. 14.🧺 Which of these is needed for the density tower? (a) honey (b) a balloon (c) a magnet (d) yeast
15. 15.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
16. 16.True or false: turmeric powder is needed for the balloon rocket. (a) False (b) True
17. 17.True or false: a feather falls slowly through the air. (a) False (b) True
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we measure it (c) we change it
19. 19.💧 Which of these is evaporation? (a) a pond icing over (b) wet clothes drying (c) butter going runny (d) snow turning to water
20. 20.🔍 Which is the odd one out? (a) honey (b) a ping-pong ball (c) cooking oil (d) a cork
21. 21.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is kept the same. (a) False (b) True
22. 22.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a shadow of ice (c) a magnet (d) snow falling
23. 23.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) taste it (c) smell it closely (d) poke it with a finger
24. 24.True or false: a paper clip is not needed for the paper helicopter. (a) False (b) True
25. 25.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a magnet (c) a pencil (d) a strip of paper
26. 26.💧 Which change is this: wet hair drying? (a) freezing (b) melting (c) evaporation (d) condensation
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
28. 28.🥄 Which of these dissolves in water? (a) small pebbles (b) sawdust (c) sand (d) food colour
29. 29.💧 Which of these is freezing? (a) a pond icing over (b) butter going runny (c) drops on a cold glass (d) drops under a pot lid
30. 30.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) cold water (c) cotton wool (d) warm water
31. 31.True or false: two chairs is not needed for the balloon rocket. (a) False (b) True
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
34. 34.🧺 Do we need a magnet for the water cycle bowl? (a) needed (b) not needed
35. 35.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) aim it at your friend (c) put string round a neck (d) keep it away from faces
36. 36.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) cling film (c) yeast (d) ice cubes
37. 37.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🧺 Which of these is needed for the water cycle bowl? (a) turmeric powder (b) a mirror (c) yeast (d) a big bowl
40. 40.⚖️ 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 measure it (c) we keep it the same

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