Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 571 · 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.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it will not break (d) it is magnetic
2. 2.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is kept the same. (a) True (b) False
3. 3.🧺 Which of these is needed for the density tower? (a) a balloon (b) a magnet (c) a spoon (d) a mirror
4. 4.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) balloons (c) magnets (d) prisms
5. 5.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) True (b) False
6. 6.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a sheet of white paper (d) a mirror
8. 8.⚖️ 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
9. 9.🧺 Which of these is needed for the dissolving test? (a) warm water (b) honey (c) a mirror (d) a balloon
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we measure it (b) we keep it the same (c) we change it
12. 12.🔍 Which is the odd one out? (a) a ball of clay (b) a cork (c) a glass marble (d) a metal key
13. 13.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) in the water layer (c) under the honey (d) on top of the oil
14. 14.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the person dropping (b) the drop height (c) the length of the blades (d) the paper clip
15. 15.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
16. 16.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a steel spoon (d) a paper towel
17. 17.🥛 Which of these works by magnetism? (a) a suction hook (b) a drinking straw (c) a vacuum cleaner (d) a compass needle
18. 18.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) slower (b) faster (c) they never dry (d) they turn to ice
19. 19.True or false: a steel spoon falls slowly through the air. (a) False (b) True
20. 20.🚁 Which of these falls slowly through the air? (a) a glass marble (b) a steel spoon (c) a coin (d) an open sheet of paper
21. 21.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it flies off the string (c) it goes less far (d) it goes much farther
22. 22.🛟 Does a glass marble float or sink in water? (a) sinks (b) floats
23. 23.🔍 Which is the odd one out? (a) an ice-cream stick (b) a cork (c) an ice cube (d) a steel spoon
24. 24.True or false: sugar stirred well dissolves faster. (a) True (b) False
25. 25.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) the card gets wet (c) it looks nicer (d) water is heavier
26. 26.🔍 Which is the odd one out? (a) glucose powder (b) baking soda (c) sand (d) food colour
27. 27.🧺 Which of these is needed for the density tower? (a) a mirror (b) a magnet (c) a battery cell (d) honey
28. 28.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) look at it through glass (d) stare at the Sun
29. 29.💧 Which of these lets water climb up it? (a) a sugar cube (b) a steel spoon (c) a rubber eraser (d) a plastic ruler
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we change it (b) we keep it the same (c) we measure it
31. 31.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) a stiff postcard (d) a magnet
32. 32.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
33. 33.🚁 Which of these falls fast through the air? (a) a toy parachute (b) a paper helicopter (c) a fluff of cotton (d) a coin
34. 34.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) particles move faster (c) warm water is thicker (d) cold water is wet
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) a battery cell
36. 36.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
37. 37.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a battery cell (b) a towel for spills (c) a results table (d) small test objects
38. 38.🧺 Do we need turmeric powder for the water cycle bowl? (a) not needed (b) needed
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) sugar (c) cold water (d) warm water

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