Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 132 · 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.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it changes colour (c) it can pop loudly (d) it gets too heavy
2. 2.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) cling film (c) a magnet (d) a big bowl
3. 3.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a magnet (d) a tub of water
4. 4.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) small test objects (c) a balloon (d) a tub of water
5. 5.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a battery cell (c) a magnet (d) a results table
6. 6.True or false: cold water is not needed for the dissolving test. (a) True (b) False
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) a mirror
8. 8.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the slope of the string (b) the same straw (c) how big we blow it (d) the same tape
10. 10.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) lots of salt stirred in (c) a little shaking (d) a few ice cubes
11. 11.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) lightning (b) wind (c) rain (d) sunshine
12. 12.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is the one thing we change. (a) False (b) True
13. 13.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.True or false: a pebble sinks in water. (a) False (b) True
15. 15.True or false: making ice lollies is freezing. (a) False (b) True
16. 16.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) in the water layer (c) under the honey (d) on top of the oil
17. 17.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
18. 18.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) honey (c) two clear glasses (d) sugar
19. 19.🍯 Is a coin denser or less dense than water? (a) less dense than water (b) denser than water
20. 20.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
21. 21.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) a magnet (d) air pushing up
22. 22.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) stare at the Sun (d) never look at the Sun
23. 23.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cotton wool (b) a teaspoon (c) sugar (d) a clock or timer
24. 24.🔍 Which is the odd one out? (a) a cork (b) a steel spoon (c) a feather (d) an empty capped bottle
25. 25.True or false: cotton wool is needed for the dissolving test. (a) False (b) True
26. 26.🚀 Which of these goes backward? (a) the rowing boat (b) the swimmer (c) gas from the rocket (d) the rocket
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) False (b) True
28. 28.🧺 Do we need vinegar for the balloon rocket? (a) not needed (b) needed
29. 29.True or false: an iron nail floats on water. (a) True (b) False
30. 30.🔍 Which layer is on top in the honey-water-oil tower? (a) cooking oil (b) coloured water (c) honey (d) the spoon
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) a sunny window (d) yeast
32. 32.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) a long string (c) a drinking straw (d) a magnet
33. 33.True or false: an empty capped bottle sinks in water. (a) False (b) True
34. 34.True or false: turmeric powder is not needed for the water cycle bowl. (a) False (b) True
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a mirror (c) a stiff postcard (d) yeast
36. 36.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they become solid (c) they mix for ever (d) they separate again
37. 37.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
38. 38.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) True (b) False
40. 40.🧺 Which of these is not needed for the water cycle bowl? (a) cling film (b) water (c) a magnet (d) sunlight

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