Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 262 · 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.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
2. 2.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the amount of water (b) the same white paper (c) brightness of rainbow (d) the same glass
3. 3.True or false: two chairs is needed for the balloon rocket. (a) False (b) True
4. 4.⚖️ 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 measure it (b) we change it (c) we keep it the same
5. 5.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it goes less far (c) it turns into a kite (d) it flies off the string
6. 6.True or false: water becoming ice is freezing. (a) False (b) True
7. 7.True or false: a big sugar cube dissolves slower. (a) True (b) False
8. 8.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it travels farther (c) it travels less far (d) it goes backward first
9. 9.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a tall clear glass (c) yeast (d) water with food colour
10. 10.True or false: a glass marble does not let water climb. (a) False (b) True
11. 11.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it melts (c) it turns blue (d) it sinks
12. 12.💧 Which change is this: wet clothes drying? (a) freezing (b) melting (c) condensation (d) evaporation
13. 13.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) faster (b) they turn to ice (c) they never dry (d) slower
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a battery cell (c) food colour (d) a glass of water
15. 15.True or false: safety scissors is needed for the paper helicopter. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) a glass marble (b) a coin (c) honey (d) an ice cube
17. 17.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) a paper cutter (c) safety scissors (d) gardening shears
18. 18.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a sink or a bucket (d) a towel
20. 20.True or false: a feather sinks in water. (a) False (b) True
21. 21.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a medicine dropper (c) a magnetic pin holder (d) a suction hook
22. 22.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a medicine dropper (c) a bicycle pump (d) a magnetic chess set
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a balloon (d) yeast
24. 24.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a clock or timer (c) cotton wool (d) warm water
25. 25.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
26. 26.🧺 Which of these is needed for the density tower? (a) yeast (b) a balloon (c) a magnet (d) a tall clear glass
27. 27.True or false: honey is denser than water. (a) False (b) True
28. 28.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a magnet (b) water with food colour (c) a spoon (d) honey
29. 29.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) a spoon (c) turmeric powder (d) a tall clear glass
30. 30.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) cling film (c) a balloon (d) ice cubes
31. 31.🚀 Which of these goes forward? (a) gas from the rocket (b) air from the balloon (c) water a swimmer pushes (d) the rowing boat
32. 32.True or false: a cork floats on water. (a) True (b) False
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) False (b) True
34. 34.True or false: honey is not needed for the density tower. (a) True (b) False
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same glass (b) the time of day (c) brightness of rainbow (d) the amount of water
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a few hours of waiting (c) a mirror (d) yeast
37. 37.🚀 Which of these goes backward? (a) the balloon (b) the swimmer (c) water from the oars (d) the rocket
38. 38.True or false: drops on a cold glass is freezing. (a) False (b) True
39. 39.🌈 How many colours do we name in a rainbow (VIBGYOR)?
40. 40.True or false: a pond icing over is freezing. (a) True (b) False

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