Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 721 · 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.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) sugar (c) warm water (d) a comb
2. 2.⚖️ 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) the amount of water (b) how many drops form (c) sun or shade (d) the size of the bowl
3. 3.True or false: a tub of water is needed for the float-or-sink test. (a) True (b) False
4. 4.🧺 Do we need water for the water cycle bowl? (a) needed (b) not needed
5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a sunny window (c) a clear glass of water (d) bright sunlight
6. 6.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) slide on them (c) wipe them dry (d) pour more water
7. 7.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
8. 8.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
9. 9.🍯 Which of these is denser than water? (a) a cork (b) an ice cube (c) a ping-pong ball (d) honey
10. 10.True or false: honey is less dense than water. (a) True (b) False
11. 11.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
12. 12.🌈 In VIBGYOR, what number colour is blue?
13. 13.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it goes much farther (c) it flies off the string (d) it goes less far
14. 14.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a long string (c) a balloon (d) vinegar
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) whether it floats (b) the tub of water (c) the amount of clay (d) the shape of the clay
16. 16.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) water with food colour (c) cooking oil (d) turmeric powder
17. 17.True or false: a piece of foil lets water climb up it. (a) False (b) True
18. 18.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water is heavy (c) hot water is magnetic (d) hot water can scald
19. 19.🛟 Does a cork float or sink in water? (a) sinks (b) floats
20. 20.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) False (b) True
22. 22.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) a ping-pong ball (b) air (c) a cork (d) a coin
25. 25.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) the rainbow fades (d) it turns brighter
26. 26.🧺 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 sink or a bucket
27. 27.🚁 Which of these falls fast through the air? (a) a feather (b) a glass marble (c) a toy parachute (d) a fluff of cotton
28. 28.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the water layer (b) in the oil layer (c) on top of the oil (d) at the very bottom
29. 29.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
30. 30.⚖️ 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 keep it the same (b) we measure it (c) we change it
31. 31.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
32. 32.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a suction hook (c) a magnetic chess set (d) a bicycle pump
33. 33.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it melts (c) it turns blue (d) it sinks
34. 34.🚀 Which of these goes forward? (a) water from the oars (b) air from the balloon (c) the balloon (d) gas from the rocket
35. 35.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) run around the tub (c) leave water on the floor (d) play near a deep pond
36. 36.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
37. 37.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) both the same (c) neither of them (d) powdered sugar
38. 38.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) small test objects (c) a results table (d) turmeric powder
39. 39.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
40. 40.🥄 Why does sugar dissolve faster in warm water? (a) cold water is wet (b) warm water is thicker (c) particles move faster (d) sugar likes the dark

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