Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 937 · 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.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) on a bed (d) near a plug point
2. 2.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands
3. 3.🧺 Which of these is needed for the dissolving test? (a) sugar (b) honey (c) a balloon (d) a mirror
4. 4.True or false: water becoming ice is freezing. (a) True (b) False
5. 5.🚁 Which of these falls fast through the air? (a) a steel spoon (b) a toy parachute (c) a feather (d) an open sheet of paper
6. 6.🧺 Which of these is not needed for the density tower? (a) honey (b) a tall clear glass (c) water with food colour (d) a battery cell
7. 7.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the petals turn red (d) the stem turns blue
8. 8.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
9. 9.💧 What happens to water vapour when it touches the cold cling film? (a) it disappears (b) it turns to salt (c) it turns to smoke (d) it turns to drops
10. 10.🧺 Which of these is needed for the density tower? (a) a mirror (b) a magnet (c) a tall clear glass (d) a balloon
11. 11.True or false: a metal key sinks in water. (a) True (b) False
12. 12.⚖️ 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) the cling film cover (b) the amount of water (c) sun or shade (d) how many drops form
13. 13.🛟 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
14. 14.🛟 Which of these floats on water? (a) a ball of clay (b) a metal key (c) a ping-pong ball (d) an iron nail
15. 15.⚖️ 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 order of the layers”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.True or false: a magnetic chess set works by magnetism. (a) False (b) True
17. 17.🛟 Which of these sinks in water? (a) a ping-pong ball (b) an empty capped bottle (c) a feather (d) a glass marble
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the amount of sugar (b) time to dissolve (c) the water temperature
19. 19.⚖️ 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 glass (b) the order of pouring (c) the order of the layers (d) how much of each liquid
20. 20.🥄 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) glucose powder (d) sawdust
21. 21.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is the one thing we change. (a) True (b) False
22. 22.🔮 Predict: you fold the two blades the other way. What changes? (a) it spins the other way (b) it turns blue (c) it falls upward (d) it does not fall
23. 23.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) sea water is warm (c) steel is very light (d) its hollow shape
24. 24.🔍 Which is the odd one out? (a) a pebble (b) a ping-pong ball (c) a glass marble (d) honey
25. 25.🧺 Which of these is needed for the water cycle bowl? (a) a magnet (b) a big bowl (c) a battery cell (d) a mirror
26. 26.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
27. 27.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) sticky tape (c) a drinking straw (d) a mirror
28. 28.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) a balloon (c) a spoon (d) a mirror
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: how much of each liquid is kept the same. (a) False (b) True
30. 30.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) a magnet pulls it (c) escaping air pushes it (d) the string pulls it
31. 31.🍯 Is a ping-pong ball denser or less dense than water? (a) denser than water (b) less dense than water
32. 32.⚖️ 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
33. 33.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it vanished for ever (c) it became air (d) it spread in the water
34. 34.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
35. 35.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic chess set (c) a bicycle pump (d) a vacuum cleaner
36. 36.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) run around the tub (c) leave water on the floor (d) wipe up spills at once
37. 37.⚖️ 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 order of pouring”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) False (b) True
40. 40.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids