Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 554 · 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.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is the one thing we change. (a) True (b) False
2. 2.⚖️ 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 kept the same. (a) False (b) True
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a magnet (c) a balloon (d) a sink or a bucket
4. 4.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
5. 5.True or false: a coin floats on water. (a) True (b) False
6. 6.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) yeast (d) a towel
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) True (b) False
9. 9.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the amount of water
11. 11.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
12. 12.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it dissolves (c) it sinks (d) it floats
13. 13.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a glass marble (d) a cotton thread
14. 14.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
15. 15.🔍 Which is the odd one out? (a) a coin (b) a glass marble (c) a ball of clay (d) an ice cube
16. 16.🧺 Which of these is needed for the water cycle bowl? (a) a mirror (b) ice cubes (c) yeast (d) a battery cell
17. 17.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a strip of paper (c) safety scissors (d) a magnet
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the amount of colour (c) the length of the stem
19. 19.True or false: a long string is needed for the balloon rocket. (a) False (b) True
20. 20.True or false: a comb is not needed for the dissolving test. (a) False (b) True
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we keep it the same (c) we change it
22. 22.🥄 Which of these dissolves slower? (a) sugar in warm water (b) a big sugar cube (c) sugar stirred well (d) powdered sugar
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar stirred well (c) a big sugar cube (d) sugar left unstirred
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a sink or a bucket (c) a towel (d) a stiff postcard
27. 27.🔍 Which is the odd one out? (a) a pebble (b) honey (c) a coin (d) cooking oil
28. 28.🍯 Is an ice cube denser or less dense than water? (a) denser than water (b) less dense than water
29. 29.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
30. 30.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) snow falling (c) a shadow of ice (d) a magnet
31. 31.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the same glass (b) the way we turn it (c) the same card (d) how full the glass is
32. 32.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
33. 33.⚖️ 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 pouring”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.🧺 Do we need a magnet for the density tower? (a) needed (b) not needed
35. 35.🧺 Which of these is needed for the density tower? (a) a mirror (b) yeast (c) turmeric powder (d) honey
36. 36.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a long string (c) turmeric powder (d) sticky tape
37. 37.💧 Which of these is melting? (a) water becoming ice (b) butter going runny (c) sweat drying on skin (d) drops on a cold glass
38. 38.🌈 In VIBGYOR, what number colour is indigo?
39. 39.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a fridge magnet (d) a vacuum cleaner
40. 40.🔍 Which is the odd one out? (a) a paper towel (b) a piece of chalk (c) a cotton thread (d) a plastic ruler

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