Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 127 · 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.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) give them to a baby (c) keep them in your mouth (d) chew them
2. 2.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
3. 3.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) pour it on the floor (c) throw the glass (d) do not lick the spoon
4. 4.True or false: the rocket goes backward. (a) False (b) True
5. 5.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
6. 6.True or false: a mirror is needed for the paper helicopter. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a steel spoon (d) a flower stem
8. 8.True or false: drops on a cold glass is melting. (a) False (b) True
9. 9.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is what we measure. (a) True (b) False
10. 10.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns brighter (d) it turns all red
11. 11.⚖️ 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) how full the glass is (c) whether the card stays (d) the way we turn it
12. 12.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) sharp kitchen shears (c) safety scissors (d) gardening shears
13. 13.🧺 Do we need a magnet for the water cycle bowl? (a) needed (b) not needed
14. 14.🚀 Which of these goes forward? (a) air from the balloon (b) water a swimmer pushes (c) the rocket (d) water from the oars
15. 15.True or false: a pebble is denser than water. (a) False (b) True
16. 16.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
17. 17.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) True (b) False
18. 18.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) look at it through glass (d) never look at the Sun
19. 19.🌈 In VIBGYOR, what number colour is indigo?
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) False (b) True
21. 21.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) two clear glasses (c) a balloon (d) cold water
22. 22.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it gets too heavy (c) it can pop loudly (d) it turns into a kite
23. 23.🎈 What is the job of the straw on the string? (a) it holds water (b) it guides the balloon (c) it blows air in (d) it makes it heavier
24. 24.🌈 How many colours do we name in a rainbow (VIBGYOR)?
25. 25.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) whether the card stays (b) how full the glass is (c) the same glass
26. 26.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to hide the corks (c) to keep children safe (d) to splash everyone
27. 27.True or false: glucose powder does not dissolve in water. (a) False (b) True
28. 28.💧 Which of these is freezing? (a) dew on morning grass (b) a puddle drying up (c) wet clothes drying (d) water becoming ice
29. 29.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
30. 30.True or false: an ice cube is denser than water. (a) False (b) True
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
32. 32.🚀 Which of these goes forward? (a) gas from the rocket (b) water from the oars (c) water a swimmer pushes (d) the balloon
33. 33.True or false: a steel spoon does not let water climb. (a) False (b) True
34. 34.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a magnet (b) water (c) ice cubes (d) a big bowl
35. 35.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) run around the tub (c) play near a deep pond (d) leave water on the floor
36. 36.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is kept the same. (a) False (b) True
37. 37.🧺 Which of these is needed for the density tower? (a) a battery cell (b) a magnet (c) turmeric powder (d) a spoon
38. 38.⚖️ 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 change it (c) we keep it the same
39. 39.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) keep it away from faces (c) blow it till it bursts (d) aim it at your friend
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) False (b) True

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