Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 910 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a magnet (c) a sheet of white paper (d) bright sunlight
2. 2.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a shadow of ice (d) a small rainbow
3. 3.True or false: a comb is not needed for the dissolving test. (a) True (b) False
4. 4.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we measure it (b) we change it (c) we keep it the same
7. 7.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) sunlight (d) magnetism
8. 8.🛟 What should you do with wet floors after the experiment? (a) wipe them dry (b) slide on them (c) pour more water (d) leave them wet
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the room it stands in (c) the amount of colour (d) the amount of water
10. 10.True or false: the swimmer goes backward. (a) True (b) False
11. 11.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a magnet (d) a clear glass of water
12. 12.🌈 How many colours do we name in a rainbow (VIBGYOR)?
13. 13.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) turmeric powder (d) a sheet of white paper
14. 14.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
15. 15.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we measure it (b) we keep it the same (c) we change it
16. 16.💧 Which change is this: sweat drying on skin? (a) freezing (b) melting (c) condensation (d) evaporation
17. 17.⚖️ 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) the same string (c) how big we blow it (d) the same straw
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) food colour (d) yeast
19. 19.True or false: a tub of water is needed for the float-or-sink test. (a) True (b) False
20. 20.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is the one thing we change. (a) True (b) False
21. 21.True or false: a misty bathroom mirror is freezing. (a) False (b) True
22. 22.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) food colour (c) a white flower (d) a few hours of waiting
24. 24.🛟 Does a glass marble float or sink in water? (a) sinks (b) floats
25. 25.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
26. 26.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) backward (c) it stays still (d) forward
27. 27.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a magnet (c) a towel for spills (d) a tub of water
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is what we measure. (a) True (b) False
29. 29.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
30. 30.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a medicine dropper (d) a suction hook
31. 31.🛟 Does a coin float or sink in water? (a) sinks (b) floats
32. 32.True or false: a magnet is needed for the density tower. (a) True (b) False
33. 33.🚀 Which of these goes backward? (a) the balloon (b) the rowing boat (c) the rocket (d) water from the oars
34. 34.True or false: a balloon is not needed for the paper helicopter. (a) False (b) True
35. 35.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we measure it (c) we change it
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a balloon (d) a white flower
38. 38.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through the air (d) through tiny stem tubes
39. 39.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it vanished for ever (c) it became air (d) it sank as sand
40. 40.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed

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