Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 666 · 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 change is this: water becoming ice? (a) condensation (b) evaporation (c) freezing (d) melting
2. 2.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we change it (b) we keep it the same (c) we measure it
3. 3.🔍 Which is the odd one out? (a) ice becoming water (b) butter going runny (c) a pond icing over (d) snow turning to water
4. 4.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) backward (c) forward (d) straight down
5. 5.💧 Which change is this: sweat drying on skin? (a) evaporation (b) melting (c) condensation (d) freezing
6. 6.🚁 Which of these falls slowly through the air? (a) a crumpled paper ball (b) a toy parachute (c) a stone (d) a coin
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a battery cell (d) a sheet of white paper
8. 8.True or false: an ice cube is less dense than water. (a) True (b) False
9. 9.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same three liquids (b) the same glass (c) how much of each liquid (d) the order of pouring
10. 10.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🔍 Which is the odd one out? (a) an ice cube (b) cooking oil (c) air (d) a pebble
12. 12.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it flies off the string (c) it goes much farther (d) it turns into a kite
13. 13.True or false: honey is needed for the density tower. (a) False (b) True
14. 14.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
15. 15.🧺 Which of these is needed for the density tower? (a) water with food colour (b) a magnet (c) a balloon (d) a battery cell
16. 16.🔍 Which is the odd one out? (a) a piece of foil (b) a glass marble (c) a plastic ruler (d) a flower stem
17. 17.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a mirror (d) a sink or a bucket
19. 19.🚀 Which of these goes backward? (a) the balloon (b) the rocket (c) the swimmer (d) water a swimmer pushes
20. 20.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so the Sun moves (d) so it does not fall
21. 21.💧 Which of these does not let water climb? (a) a flower stem (b) a steel spoon (c) a piece of chalk (d) a sugar cube
22. 22.🚀 Which of these goes forward? (a) air from the balloon (b) the rocket (c) water a swimmer pushes (d) water from the oars
23. 23.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) yeast (c) a big bowl (d) sunlight
24. 24.🔍 Which is the odd one out? (a) snow turning to water (b) drops on a cold glass (c) butter going runny (d) ice becoming water
25. 25.True or false: a magnet is not needed for the water cycle bowl. (a) True (b) False
26. 26.True or false: sugar stirred well dissolves slower. (a) True (b) False
27. 27.🧺 Which of these is needed for the water cycle bowl? (a) cling film (b) turmeric powder (c) a balloon (d) a magnet
28. 28.🚁 Why does the paper helicopter fall slowly? (a) a magnet holds it (b) it has no weight (c) the floor pushes it (d) air pushes on its blades
29. 29.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns all red (d) it turns brighter
31. 31.🥄 Which of these dissolves faster? (a) sugar stirred well (b) sugar in icy water (c) a big sugar cube (d) sugar left unstirred
32. 32.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) water is hiding there (d) air inside pushes back
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) the amount of water (c) the stirring (d) the kind of sugar
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the time of day (b) brightness of rainbow (c) the amount of water
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a few hours of waiting (d) food colour
36. 36.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) ice cubes (c) a big bowl (d) a mirror
37. 37.🔍 Which is the odd one out? (a) butter going runny (b) making ice lollies (c) snow turning to water (d) ice becoming water
38. 38.🛟 Which of these floats on water? (a) a ball of clay (b) a glass marble (c) a coin (d) an empty capped bottle
39. 39.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) a small cup (c) water (d) a battery cell
40. 40.🔍 Which is the odd one out? (a) water becoming ice (b) a pond icing over (c) a puddle drying up (d) making ice lollies

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