Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 456 · 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.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it goes backward first (c) it travels less far (d) it travels farther
2. 2.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a battery cell (b) a strip of paper (c) a pencil (d) safety scissors
3. 3.🔍 Which is the odd one out? (a) a fluff of cotton (b) a stone (c) a coin (d) a steel spoon
4. 4.🚀 Which of these goes forward? (a) the rocket (b) air from the balloon (c) gas from the rocket (d) water a swimmer pushes
5. 5.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a vacuum cleaner (c) a medicine dropper (d) a drinking straw
6. 6.📘 What does “dense” mean? (a) very hot (b) very thin (c) heavy for its size (d) very colourful
7. 7.🔍 What do you see after pouring honey, water and oil into one glass? (a) one mixed colour (b) three separate layers (c) the glass gets hot (d) bubbles of gas
8. 8.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
9. 9.🧺 Do we need a magnet for the paper helicopter? (a) needed (b) not needed
10. 10.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to cool the glass (d) to catch any spills
11. 11.🌈 How many colours do we name in a rainbow (VIBGYOR)?
12. 12.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
13. 13.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
14. 14.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
15. 15.🥄 Does sugar left unstirred dissolve faster or slower? (a) slower (b) faster
16. 16.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True
17. 17.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar left unstirred (c) a big sugar cube (d) sugar stirred well
18. 18.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) powdered sugar (d) sugar left unstirred
19. 19.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a mirror (b) a tall clear glass (c) cooking oil (d) honey
20. 20.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a mirror (c) a drinking straw (d) a long string
21. 21.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of the layers (b) the same three liquids (c) the order of pouring
22. 22.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) water with food colour (c) a mirror (d) honey
23. 23.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
24. 24.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the cling film cover (b) the size of the bowl (c) how many drops form (d) sun or shade
25. 25.🧺 Do we need a paper clip for the paper helicopter? (a) needed (b) not needed
26. 26.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) honey (b) a clock or timer (c) cold water (d) two clear glasses
27. 27.True or false: a pebble is denser than water. (a) True (b) False
28. 28.True or false: a misty bathroom mirror is freezing. (a) True (b) False
29. 29.⚖️ 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 amount of water (b) the time of day (c) the same glass (d) brightness of rainbow
30. 30.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it still floats (c) it sinks (d) it turns white
31. 31.🧺 Which of these is not needed for the water cycle bowl? (a) water (b) ice cubes (c) a battery cell (d) a big bowl
32. 32.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.🎈 What is the job of the straw on the string? (a) it blows air in (b) it makes it heavier (c) it holds water (d) it guides the balloon
34. 34.🍯 Which of these is denser than water? (a) a cork (b) a coin (c) air (d) an ice cube
35. 35.⚖️ 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 change it (b) we measure it (c) we keep it the same
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is the one thing we change. (a) False (b) True
37. 37.🧺 Which of these is needed for the paper helicopter? (a) a balloon (b) a magnet (c) a paper clip (d) yeast
38. 38.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
39. 39.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar in warm water (c) sugar in icy water (d) a big sugar cube
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) turmeric powder (d) food colour

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