Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 577 · 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.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
2. 2.🧺 Which of these is needed for the water cycle bowl? (a) yeast (b) a mirror (c) a battery cell (d) sunlight
3. 3.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
4. 4.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) yeast (d) a clear glass of water
5. 5.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) yeast (d) food colour
6. 6.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is the one thing we change. (a) True (b) False
7. 7.🚁 Which of these falls slowly through the air? (a) a coin (b) a feather (c) a steel spoon (d) a stone
8. 8.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a medicine dropper (d) a fridge magnet
9. 9.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
10. 10.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the slope of the string (b) how big we blow it (c) distance it travels
12. 12.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) the petals turn red (d) no colour change
13. 13.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to make it magnetic (b) to stop the spinning (c) to weigh down the bottom (d) to make it fall slower
14. 14.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a medicine dropper (d) a compass needle
15. 15.⚖️ 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) the kind of paper (c) time to reach the floor
16. 16.🥄 Which of these does not dissolve in water? (a) food colour (b) small pebbles (c) table salt (d) glucose powder
17. 17.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) prisms (d) clouds
18. 18.True or false: a crumpled paper ball falls fast through the air. (a) False (b) True
19. 19.💧 Which of these does not let water climb? (a) a flower stem (b) a cotton thread (c) a sugar cube (d) a piece of foil
20. 20.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
21. 21.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
22. 22.🔮 Predict: you add two more paper clips. How does it fall? (a) slower (b) it floats up (c) faster (d) it stops in the air
23. 23.True or false: water with food colour is needed for the density tower. (a) False (b) True
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes
26. 26.🧺 Which of these is needed for the density tower? (a) yeast (b) a tall clear glass (c) a mirror (d) a magnet
27. 27.🚁 Dropped from a raised hand, does a toy parachute fall slowly or fast? (a) falls fast (b) falls slowly
28. 28.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) sun or shade (b) the amount of water (c) how many drops form
29. 29.🌈 How many colours do we name in a rainbow (VIBGYOR)?
30. 30.True or false: sugar is needed for the dissolving test. (a) False (b) True
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a towel (d) a mirror
32. 32.🍯 Is a glass marble denser or less dense than water? (a) denser than water (b) less dense than water
33. 33.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a long string (c) sticky tape (d) a magnet
34. 34.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) a sheet of glass (b) the flat sheet (c) the crumpled ball (d) neither of them
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.🧺 Which of these is not needed for the density tower? (a) honey (b) a mirror (c) cooking oil (d) a spoon
37. 37.🥛 Which of these works by air pressure? (a) a compass needle (b) a drinking straw (c) a magnetic pin holder (d) a fridge magnet
38. 38.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a balloon (b) honey (c) a tall clear glass (d) a spoon
39. 39.True or false: a paper clip is not needed for the paper helicopter. (a) True (b) False
40. 40.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a teaspoon (c) a balloon (d) a clock or timer

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