Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 733 · 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.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) stare at the Sun (d) look at it in a mirror
2. 2.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) sugar (c) warm water (d) a teaspoon
3. 3.True or false: a suction hook works by magnetism. (a) True (b) False
4. 4.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a long string (c) two chairs (d) vinegar
5. 5.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) water with food colour (c) a magnet (d) a tall clear glass
6. 6.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
7. 7.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
8. 8.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) the sugar cube (c) powdered sugar (d) neither of them
9. 9.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a battery cell (c) a magnet (d) a tub of water
10. 10.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it does not fall (c) so it gets hot (d) so it turns blue
11. 11.🧺 Which of these is not needed for the density tower? (a) turmeric powder (b) a tall clear glass (c) water with food colour (d) a spoon
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is the one thing we change. (a) True (b) False
13. 13.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) cling film (c) a battery cell (d) a small cup
14. 14.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it goes backward first (c) it speeds up (d) it travels less far
15. 15.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar in warm water (c) a big sugar cube (d) sugar left unstirred
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the amount of water (c) the same window
17. 17.🥛 Which of these works by magnetism? (a) a suction hook (b) a magnetic pin holder (c) a bicycle pump (d) a vacuum cleaner
18. 18.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
19. 19.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) the cap is sticky (d) air inside pushes back
20. 20.🔍 Which is the odd one out? (a) a glass marble (b) a coin (c) a paper helicopter (d) a crumpled paper ball
21. 21.💧 Which of these is melting? (a) dew on morning grass (b) drops under a pot lid (c) water becoming ice (d) ice becoming water
22. 22.🧺 Which of these is not needed for the water cycle bowl? (a) cling film (b) a big bowl (c) ice cubes (d) a magnet
23. 23.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) cold water is wet (c) sugar likes the dark (d) particles move faster
24. 24.🚁 Which of these falls slowly through the air? (a) a coin (b) a toy parachute (c) a stone (d) a crumpled paper ball
25. 25.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
26. 26.True or false: a rubber eraser lets water climb up it. (a) False (b) True
27. 27.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) the water turns solid (c) the sugar turns to salt (d) all of it dissolves
28. 28.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) a magnet (c) a clock or timer (d) cold water
29. 29.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) sugar (c) warm water (d) honey
30. 30.🚁 Which of these falls slowly through the air? (a) a stone (b) a crumpled paper ball (c) an open sheet of paper (d) a steel spoon
31. 31.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) sugar (c) two clear glasses (d) a magnet
32. 32.🥄 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
33. 33.True or false: powdered sugar dissolves slower. (a) True (b) False
34. 34.🚀 Which of these goes backward? (a) the swimmer (b) water a swimmer pushes (c) the rowing boat (d) the balloon
35. 35.🥄 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a towel (c) turmeric powder (d) yeast
37. 37.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a spoon (c) a mirror (d) water with food colour
38. 38.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls slowly (b) falls fast
39. 39.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a balloon (c) a magnet (d) a mirror
40. 40.⚖️ 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 change it (c) we measure it

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