Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 798 · 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.🧺 Do we need water with food colour for the density tower? (a) needed (b) not needed
2. 2.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “time to reach the floor”? (a) we change it (b) we keep it the same (c) we measure it
3. 3.🥛 Which of these works by air pressure? (a) a compass needle (b) a medicine dropper (c) a fridge magnet (d) a magnetic pin holder
4. 4.True or false: turmeric powder is needed for the paper helicopter. (a) False (b) True
5. 5.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) the sugar cube (c) both the same (d) powdered sugar
6. 6.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) turmeric powder
7. 7.🚀 Which of these goes forward? (a) air from the balloon (b) the rowing boat (c) water from the oars (d) gas from the rocket
8. 8.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
9. 9.True or false: a tub of water is needed for the float-or-sink test. (a) True (b) False
10. 10.🚁 Dropped from a raised hand, does a paper helicopter fall slowly or fast? (a) falls slowly (b) falls fast
11. 11.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) orange (c) red (d) yellow
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a magnet (d) a sink or a bucket
14. 14.True or false: the balloon goes forward. (a) False (b) True
15. 15.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) in front of you (c) under the ground (d) behind you
16. 16.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) a battery cell (c) a big bowl (d) cling film
17. 17.True or false: water from the oars goes backward. (a) True (b) False
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same white paper (b) the same glass (c) brightness of rainbow (d) the same window
19. 19.🔍 Which is the odd one out? (a) a medicine dropper (b) a vacuum cleaner (c) a suction hook (d) a magnetic pin holder
20. 20.True or false: gas from the rocket goes backward. (a) False (b) True
21. 21.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) look at it in a mirror (d) never look at the Sun
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the shape of the clay (b) whether it floats (c) the amount of clay (d) the kind of clay
23. 23.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) a balloon (c) a magnet (d) a teaspoon
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) a mirror (d) bright sunlight
25. 25.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) petals like colour (d) the stem is hot
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.⚖️ 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 pouring (b) the order of the layers (c) the same three liquids
28. 28.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a balloon (c) water with food colour (d) cooking oil
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) brightness of rainbow (c) the time of day
30. 30.⚖️ 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 measure it (b) we keep it the same (c) we change it
31. 31.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
32. 32.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) a spoon (c) a tall clear glass (d) a mirror
33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the amount of water (c) the amount of colour (d) the length of the stem
34. 34.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) sun or shade (b) how many drops form (c) the cling film cover (d) the time we wait
35. 35.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
36. 36.🍯 Is a glass marble denser or less dense than water? (a) less dense than water (b) denser than water
37. 37.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) yeast (c) a tub of water (d) small test objects
38. 38.🧺 Do we need a pencil for the paper helicopter? (a) needed (b) not needed
39. 39.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a mirror (c) a magnet (d) a sheet of white paper
40. 40.⚖️ 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

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