Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 836 · 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 — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) False (b) True
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the room it stands in (b) time for colour to show (c) the length of the stem (d) the kind of flower
3. 3.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a compass needle (c) a medicine dropper (d) a vacuum cleaner
4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the water temperature (c) the kind of sugar
5. 5.True or false: a results table is not needed for the float-or-sink test. (a) False (b) True
6. 6.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
7. 7.🌊 What pushes a floating cork upward? (a) the tub (b) the water (c) the air above (d) the cork itself
8. 8.🚁 Which of these falls slowly through the air? (a) a crumpled paper ball (b) an open sheet of paper (c) a glass marble (d) a stone
9. 9.True or false: a ball of clay sinks in water. (a) False (b) True
10. 10.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of pouring (b) the order of the layers (c) the same glass
11. 11.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) two chairs (c) a balloon (d) vinegar
13. 13.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the slope of the string (b) how big we blow it (c) the same tape (d) the same straw
14. 14.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) honey (c) a tall clear glass (d) a battery cell
15. 15.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
16. 16.🔍 Which is the odd one out? (a) a steel spoon (b) a coin (c) an iron nail (d) a cork
17. 17.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a sugar cube (c) a steel spoon (d) a rubber eraser
18. 18.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) spilled oil is slippery (c) oil turns into honey (d) oil attracts magnets
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.🌈 How many colours do we name in a rainbow (VIBGYOR)?
21. 21.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it turns blue (d) so it does not fall
22. 22.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to grow plants (d) to cool the glass
23. 23.⚖️ 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 measure it (b) we change it (c) we keep it the same
24. 24.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a sunny window (c) turmeric powder (d) a magnet
25. 25.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
26. 26.🧺 Which of these is not needed for the water cycle bowl? (a) sunlight (b) cling film (c) yeast (d) ice cubes
27. 27.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
28. 28.🧺 Which of these is needed for the paper helicopter? (a) a balloon (b) a magnet (c) a pencil (d) a battery cell
29. 29.💧 Which of these lets water climb up it? (a) a steel spoon (b) a cotton thread (c) a piece of foil (d) a glass marble
30. 30.True or false: butter going runny is evaporation. (a) True (b) False
31. 31.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) water splits the light (c) the water is coloured (d) the paper makes colours
32. 32.💧 Why do water drops form on the outside of a glass of ice water? (a) the glass sweats (b) vapour in air cools (c) the glass leaks (d) ice escapes the glass
33. 33.🧺 Do we need cooking oil for the density tower? (a) not needed (b) needed
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) nothing ever happens (d) colour climbs up it
36. 36.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
37. 37.True or false: the balloon goes backward. (a) False (b) True
38. 38.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) the water turns solid (c) the sugar turns to salt (d) some stays undissolved
39. 39.⚖️ 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
40. 40.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we measure it (b) we keep it the same (c) we change it

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