Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 681 · 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 is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) evaporation (d) capillary action
2. 2.⚖️ 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) how many drops form (b) sun or shade (c) the cling film cover
3. 3.True or false: a drinking straw works by magnetism. (a) True (b) False
4. 4.🍯 Which of these is less dense than water? (a) air (b) a glass marble (c) a coin (d) very salty water
5. 5.True or false: a magnetic chess set works by magnetism. (a) False (b) True
6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) time to dissolve (b) the water temperature (c) the amount of water (d) the amount of sugar
7. 7.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
8. 8.True or false: air from the balloon goes backward. (a) False (b) True
9. 9.🛟 Which of these floats on water? (a) a coin (b) a glass marble (c) a pebble (d) a piece of thermocol
10. 10.🛟 Does a dry leaf float or sink in water? (a) floats (b) sinks
11. 11.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.🚁 Dropped from a raised hand, does a coin fall slowly or fast? (a) falls slowly (b) falls fast
13. 13.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) air pressure (d) sunlight
14. 14.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the cap is sticky (c) air inside pushes back (d) the bottle is magnetic
15. 15.True or false: a piece of chalk lets water climb up it. (a) False (b) True
16. 16.True or false: a feather sinks in water. (a) False (b) True
17. 17.🛟 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
18. 18.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a magnet (d) a sunny window
19. 19.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is kept the same. (a) False (b) True
22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil attracts magnets (c) oil turns into honey (d) spilled oil is slippery
24. 24.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) yeast (c) a tub of water (d) a results table
25. 25.True or false: a mirror is not needed for the float-or-sink test. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) an iron nail (b) a pebble (c) an empty capped bottle (d) a steel spoon
27. 27.🧺 Do we need yeast for the paper helicopter? (a) not needed (b) needed
28. 28.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) in the honey layer (c) on top of the oil (d) in the water layer
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the kind of clay (b) the shape of the clay (c) whether it floats
30. 30.True or false: a mirror is needed for the water cycle bowl. (a) True (b) False
31. 31.True or false: a battery cell is needed for the water cycle bowl. (a) False (b) True
32. 32.True or false: a battery cell is not needed for the density tower. (a) False (b) True
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
35. 35.True or false: sugar in warm water dissolves slower. (a) True (b) False
36. 36.🧺 Do we need ice cubes for the water cycle bowl? (a) not needed (b) needed
37. 37.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is magnetic (d) it is heavier
38. 38.True or false: yeast is not needed for the density tower. (a) False (b) True
39. 39.🧺 Which of these is not needed for the density tower? (a) water with food colour (b) a balloon (c) cooking oil (d) honey
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False

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