Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 413 · 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.🍯 Is honey denser or less dense than water? (a) less dense than water (b) denser than water
2. 2.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it is magnetic (d) it will not break
3. 3.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it changes colour (c) it gets too heavy (d) it can pop loudly
4. 4.True or false: sunlight is needed for the water cycle bowl. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) air (b) a ping-pong ball (c) very salty water (d) cooking oil
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) turmeric powder (d) a clear glass of water
8. 8.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a battery cell (d) a glass of water
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) how full the glass is (b) whether the card stays (c) the same glass
11. 11.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) sugar (c) cold water (d) a mirror
12. 12.🛟 Which of these floats on water? (a) a steel spoon (b) an iron nail (c) a pebble (d) a piece of thermocol
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a white flower (d) a balloon
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
15. 15.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it travels less far (c) it speeds up (d) it goes backward first
16. 16.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) honey (c) cold water (d) warm water
17. 17.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it flies off the string (c) it turns into a kite (d) it goes less far
18. 18.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to hide the corks (c) to splash everyone (d) to win a prize
19. 19.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls slowly (b) falls fast
20. 20.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
21. 21.💧 Which change is this: drops under a pot lid? (a) condensation (b) melting (c) freezing (d) evaporation
22. 22.🚀 Which of these goes backward? (a) the rowing boat (b) the swimmer (c) the balloon (d) air from the balloon
23. 23.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar in icy water (c) sugar stirred well (d) sugar in warm water
24. 24.🧺 Which of these is needed for the paper helicopter? (a) a strip of paper (b) a battery cell (c) a balloon (d) a mirror
25. 25.🌈 How many colours do we name in a rainbow (VIBGYOR)?
26. 26.🧺 Which of these is not needed for the dissolving test? (a) a mirror (b) warm water (c) a clock or timer (d) two clear glasses
27. 27.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) cooking oil (c) yeast (d) a spoon
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) False (b) True
29. 29.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) a clock or timer (c) two clear glasses (d) a magnet
30. 30.⚖️ 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 measure it (b) we change it (c) we keep it the same
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
32. 32.🌈 In VIBGYOR, what number colour is red?
33. 33.🔍 Which is the odd one out? (a) a stone (b) a crumpled paper ball (c) a feather (d) a coin
34. 34.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) all of it dissolves (c) the sugar turns to salt (d) some stays undissolved
35. 35.True or false: a fluff of cotton falls fast through the air. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) a cotton thread (b) a strip of cloth (c) a paper towel (d) a rubber eraser
37. 37.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
38. 38.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a battery cell (d) a results table
39. 39.🔍 Which is the odd one out? (a) a pebble (b) a coin (c) a ping-pong ball (d) a steel spoon
40. 40.True or false: a magnet is not needed for the density tower. (a) True (b) False

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