Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 286 · 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 happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns all red (d) it turns brighter
2. 2.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil attracts magnets (c) spilled oil is slippery (d) oil makes it rain
4. 4.True or false: sugar in icy water dissolves faster. (a) True (b) False
5. 5.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) more drops form (b) the bowl freezes (c) the water turns red (d) fewer drops form
6. 6.💧 Which change is this: snow turning to water? (a) freezing (b) evaporation (c) melting (d) condensation
7. 7.💧 Which change is this: drops on a cold glass? (a) evaporation (b) melting (c) freezing (d) condensation
8. 8.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) False (b) True
9. 9.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) time to reach the floor (b) the drop height (c) the length of the blades
10. 10.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a balloon (c) a battery cell (d) two chairs
11. 11.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the amount of clay (b) the shape of the clay (c) whether it floats
12. 12.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
13. 13.🔍 Which is the odd one out? (a) a feather (b) an ice cube (c) an ice-cream stick (d) a ball of clay
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is what we measure. (a) False (b) True
15. 15.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
16. 16.True or false: a battery cell is needed for the water cycle bowl. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) making ice lollies (b) ice becoming water (c) butter going runny (d) snow turning to water
18. 18.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) water (c) sunlight (d) a magnet
19. 19.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) warm water (c) a mirror (d) two clear glasses
20. 20.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) taste it (c) look for leftover grains (d) poke it with a finger
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) False (b) True
22. 22.True or false: turmeric powder is not needed for the balloon rocket. (a) True (b) False
23. 23.🧺 Which of these is not needed for the paper helicopter? (a) a strip of paper (b) a pencil (c) safety scissors (d) a battery cell
24. 24.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the flat sheet (b) a sheet of glass (c) the crumpled ball (d) neither of them
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
26. 26.True or false: honey is less dense than water. (a) True (b) False
27. 27.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a balloon (c) a tub of water (d) small test objects
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) table salt (d) chalk powder
30. 30.⚖️ 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 keep it the same (b) we change it (c) we measure it
31. 31.True or false: the rowing boat goes backward. (a) True (b) False
32. 32.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) a clear glass of water (d) turmeric powder
33. 33.🚁 Which of these falls slowly through the air? (a) a stone (b) a coin (c) a toy parachute (d) a crumpled paper ball
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the amount of water (b) the kind of flower (c) time for colour to show (d) the length of the stem
35. 35.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
36. 36.🍯 Is a glass marble denser or less dense than water? (a) less dense than water (b) denser than water
37. 37.🌈 In VIBGYOR, what number colour is red?
38. 38.⚖️ 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 three liquids is the one thing we change. (a) True (b) False
39. 39.🚁 Which of these falls slowly through the air? (a) a stone (b) a fluff of cotton (c) a crumpled paper ball (d) a coin
40. 40.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) bright sunlight (c) yeast (d) a magnet

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