Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 950 · 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.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar left unstirred (c) sugar stirred well (d) sugar in icy water
2. 2.True or false: cold water is needed for the dissolving test. (a) True (b) False
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a balloon (c) a white flower (d) a magnet
4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
5. 5.🎈 What is the job of the straw on the string? (a) it holds water (b) it guides the balloon (c) it makes it heavier (d) it blows air in
6. 6.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) water (c) a magnet (d) a big bowl
7. 7.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) the bottle is magnetic (d) air inside pushes back
8. 8.🧺 Which of these is not needed for the water cycle bowl? (a) a big bowl (b) sunlight (c) cling film (d) yeast
9. 9.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) yeast (c) a pencil (d) a strip of paper
10. 10.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) False (b) True
11. 11.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a magnet (c) yeast (d) a towel for spills
12. 12.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) small test objects (c) a magnet (d) a results table
13. 13.🛟 Does an ice cube float or sink in water? (a) floats (b) sinks
14. 14.🍯 Is a pebble denser or less dense than water? (a) less dense than water (b) denser than water
15. 15.🔍 Which is the odd one out? (a) a paper helicopter (b) a feather (c) a coin (d) a toy parachute
16. 16.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) vinegar (c) two chairs (d) sticky tape
17. 17.🧺 Do we need turmeric powder for the water cycle bowl? (a) not needed (b) needed
18. 18.True or false: a dry leaf sinks in water. (a) True (b) False
19. 19.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) a big sugar cube (d) powdered sugar
20. 20.💧 Which change is this: wet clothes drying? (a) freezing (b) melting (c) evaporation (d) condensation
21. 21.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the drop height (b) time to reach the floor (c) the paper clip (d) the person dropping
22. 22.🛟 Does an iron nail float or sink in water? (a) floats (b) sinks
23. 23.🧺 Do we need cooking oil for the density tower? (a) not needed (b) needed
24. 24.🧺 Do we need yeast for the water cycle bowl? (a) not needed (b) needed
25. 25.⚖️ 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 same three liquids”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) sun or shade (b) how many drops form (c) the size of the bowl (d) the amount of water
27. 27.True or false: a ruler is needed for the paper helicopter. (a) False (b) True
28. 28.💧 Which of these is evaporation? (a) making ice lollies (b) drops under a pot lid (c) a puddle drying up (d) snow turning to water
29. 29.True or false: a magnet is not needed for the paper helicopter. (a) True (b) False
30. 30.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a balloon (c) a mirror (d) a sheet of white paper
31. 31.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a small rainbow (c) snow falling (d) a magnet
32. 32.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to drops (b) it disappears (c) it turns to salt (d) it turns to smoke
33. 33.🛟 Which of these sinks in water? (a) an ice cube (b) a dry leaf (c) an iron nail (d) a piece of thermocol
34. 34.🔍 Which is the odd one out? (a) a toy parachute (b) a glass marble (c) an open sheet of paper (d) a feather
35. 35.💧 Which of these is condensation? (a) wet clothes drying (b) a misty bathroom mirror (c) wet hair drying (d) butter going runny
36. 36.⚖️ 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 change it (b) we measure it (c) we keep it the same
37. 37.🧺 Which of these is needed for the water cycle bowl? (a) a battery cell (b) ice cubes (c) turmeric powder (d) yeast
38. 38.🧺 Which of these is not needed for the water cycle bowl? (a) a balloon (b) cling film (c) water (d) a big bowl
39. 39.True or false: sawdust dissolves in water. (a) False (b) True
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (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