Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 461 · 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 what we measure. (a) False (b) True
2. 2.🧺 Do we need cling film for the water cycle bowl? (a) needed (b) not needed
3. 3.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls fast (b) falls slowly
4. 4.🍯 Is a ping-pong ball denser or less dense than water? (a) denser than water (b) less dense than water
5. 5.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
6. 6.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a balloon (d) a towel
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same tape (b) the same string (c) the slope of the string (d) how big we blow it
8. 8.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) a small cup (c) a mirror (d) a battery cell
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the amount of water (b) the amount of colour (c) the length of the stem (d) the kind of flower
10. 10.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
11. 11.🧺 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 magnet (d) bright sunlight
12. 12.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
14. 14.True or false: a tub of water is not needed for the float-or-sink test. (a) False (b) True
15. 15.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) a mirror (c) sunlight (d) a big bowl
16. 16.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.⚖️ 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 way we turn it (b) whether the card stays (c) the same glass (d) how full the glass is
19. 19.⚖️ 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) True (b) False
20. 20.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) look at it in a mirror (d) stare at the Sun
21. 21.True or false: a spoon is needed for the density tower. (a) True (b) False
22. 22.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) refraction (d) magnetism
23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
25. 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) a tub of water (d) yeast
27. 27.🚀 Which of these goes forward? (a) water from the oars (b) gas from the rocket (c) the rocket (d) air from the balloon
28. 28.True or false: sand dissolves in water. (a) True (b) False
29. 29.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it holds water (c) it blows air in (d) it guides the balloon
30. 30.🧺 Which of these is not needed for the density tower? (a) water with food colour (b) a spoon (c) a magnet (d) honey
31. 31.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
32. 32.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
33. 33.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) vinegar (c) yeast (d) a balloon
34. 34.🧺 Do we need a balloon for the water cycle bowl? (a) needed (b) not needed
35. 35.🧺 Which of these is needed for the density tower? (a) a magnet (b) yeast (c) a spoon (d) a battery cell
36. 36.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a balloon (c) two clear glasses (d) a clock or timer
37. 37.⚖️ 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 keep it the same (c) we measure it
38. 38.🥄 Which of these dissolves in water? (a) cooking oil (b) sand (c) small pebbles (d) table salt
39. 39.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) over a sink or bucket (d) near a plug point
40. 40.⚖️ 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) brightness of rainbow (b) the same white paper (c) the amount of water (d) the same glass

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