Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 400 · 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.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
2. 2.True or false: a fluff of cotton falls fast through the air. (a) False (b) True
3. 3.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
4. 4.True or false: drops on a cold glass is melting. (a) True (b) False
5. 5.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
6. 6.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a magnetic pin holder (c) a suction hook (d) a medicine dropper
7. 7.📘 What pulls the paper helicopter down to the floor? (a) the wind (b) air pressure (c) gravity (d) magnetism
8. 8.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a pencil (c) a magnet (d) safety scissors
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) food colour (c) a white flower (d) a few hours of waiting
10. 10.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a steel spoon (d) a piece of foil
11. 11.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a battery cell (c) a towel for spills (d) a tub of water
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 turns into a kite (d) it goes much farther
13. 13.🧺 Do we need a mirror for the paper helicopter? (a) needed (b) not needed
14. 14.🔍 Which is the odd one out? (a) cooking oil (b) a coin (c) air (d) a cork
15. 15.🧺 Which of these is not needed for the float-or-sink test? (a) a balloon (b) a tub of water (c) a towel for spills (d) a results table
16. 16.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
17. 17.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
18. 18.🔍 Which is the odd one out? (a) a strip of cloth (b) a piece of chalk (c) a sugar cube (d) a piece of foil
19. 19.🚁 Why does the paper helicopter fall slowly? (a) a magnet holds it (b) air pushes on its blades (c) it has no weight (d) the floor pushes it
20. 20.True or false: food colour dissolves in water. (a) True (b) False
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the tub of water (c) the amount of clay (d) the shape of the clay
22. 22.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it turns blue (c) so it does not fall (d) so it gets hot
23. 23.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) honey (c) turmeric powder (d) a spoon
24. 24.True or false: a pencil is needed for the paper helicopter. (a) False (b) True
25. 25.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) warm water (c) a teaspoon (d) a balloon
26. 26.🧺 Which of these is not needed for the paper helicopter? (a) a magnet (b) a strip of paper (c) a paper clip (d) safety scissors
27. 27.⚖️ 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
28. 28.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) sugar (d) sand
29. 29.💧 In the covered bowl, where does the water vapour come from? (a) the cling film (b) water warmed by the Sun (c) the air outside (d) the bowl itself
30. 30.🚁 Which of these falls fast through the air? (a) a feather (b) a crumpled paper ball (c) a toy parachute (d) a fluff of cotton
31. 31.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) turmeric powder (c) a balloon (d) a long string
32. 32.🔮 Predict: you add two more paper clips. How does it fall? (a) it floats up (b) slower (c) it stops in the air (d) faster
33. 33.🛟 What should you do with popped balloon pieces? (a) chew them (b) give them to a baby (c) keep them in your mouth (d) throw them away safely
34. 34.🧺 Which of these is not needed for the water cycle bowl? (a) cling film (b) sunlight (c) a big bowl (d) a battery cell
35. 35.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is kept the same. (a) True (b) False
36. 36.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the amount of clay
38. 38.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) safety scissors (c) a ruler (d) a mirror
39. 39.💧 Which change is this: snow turning to water? (a) evaporation (b) freezing (c) melting (d) condensation
40. 40.⚖️ 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 “how much of each liquid”? (a) we keep it the same (b) we measure it (c) we change it

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