Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 689 · 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 the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the tub of water (b) the shape of the clay (c) the amount of clay (d) whether it floats
2. 2.True or false: a battery cell is not needed for the water cycle bowl. (a) False (b) True
3. 3.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is magnetic (d) it is heavier
4. 4.🧺 Do we need a balloon for the paper helicopter? (a) needed (b) not needed
5. 5.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) a big bowl (c) a magnet (d) a mirror
6. 6.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a rainbow (c) a magnet (d) a solution
7. 7.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) poke it with a finger (c) smell it closely (d) taste it
8. 8.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) two clear glasses (c) warm water (d) a balloon
9. 9.⚖️ 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) how full the glass is (b) whether the card stays (c) the same card (d) the same glass
10. 10.💧 Which of these does not let water climb? (a) a sugar cube (b) a rubber eraser (c) a strip of cloth (d) a piece of chalk
11. 11.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a tub of water (c) a battery cell (d) small test objects
12. 12.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
13. 13.🌈 In VIBGYOR, what number colour is yellow?
14. 14.🛟 What should you do with wet floors after the experiment? (a) wipe them dry (b) slide on them (c) pour more water (d) leave them wet
15. 15.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) False (b) True
17. 17.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
18. 18.⚖️ 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 the layers”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.True or false: a puddle drying up is freezing. (a) True (b) False
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) yeast (c) a sink or a bucket (d) a magnet
21. 21.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) turmeric powder (d) small test objects
22. 22.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it turns into a kite (c) it goes less far (d) it flies off the string
23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is kept the same. (a) False (b) True
24. 24.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a towel (c) a glass of water (d) a stiff postcard
26. 26.🔍 Which is the odd one out? (a) a piece of foil (b) a cotton thread (c) a rubber eraser (d) a glass marble
27. 27.True or false: a steel spoon lets water climb up it. (a) True (b) False
28. 28.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) the flower glows (d) no colour change
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.True or false: a drinking straw works by air pressure. (a) True (b) False
31. 31.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) sugar (c) a clock or timer (d) a mirror
32. 32.True or false: wet clothes drying is evaporation. (a) False (b) True
33. 33.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) sunlight (c) a big bowl (d) a balloon
34. 34.True or false: a piece of foil does not let water climb. (a) True (b) False
35. 35.True or false: dew on morning grass is condensation. (a) False (b) True
36. 36.⚖️ 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) the amount of water (b) brightness of rainbow (c) the same white paper (d) the same window
37. 37.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) neither of them (b) the flat sheet (c) a sheet of glass (d) the crumpled ball
38. 38.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a balloon (c) two chairs (d) a mirror
39. 39.🧺 Which of these is needed for the water cycle bowl? (a) a magnet (b) yeast (c) ice cubes (d) a mirror
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) False (b) True

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