Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 816 · 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 a big bowl for the water cycle bowl? (a) not needed (b) needed
2. 2.⚖️ 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
3. 3.⚖️ 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 glass (c) the same white paper (d) the amount of water
4. 4.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
5. 5.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) taste each layer (c) do not lick the spoon (d) throw the glass
6. 6.True or false: a cotton thread lets water climb up it. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a fridge magnet (d) a medicine dropper
8. 8.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
9. 9.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
10. 10.True or false: baking soda dissolves in water. (a) False (b) True
11. 11.🍯 Which of these is denser than water? (a) a glass marble (b) a cork (c) cooking oil (d) an ice cube
12. 12.🚁 Dropped from a raised hand, does a paper helicopter fall slowly or fast? (a) falls fast (b) falls slowly
13. 13.🚁 Which of these falls fast through the air? (a) a toy parachute (b) a glass marble (c) an open sheet of paper (d) a fluff of cotton
14. 14.🌈 How many colours do we name in a rainbow (VIBGYOR)?
15. 15.True or false: a crumpled paper ball falls slowly through the air. (a) False (b) True
16. 16.True or false: an empty capped bottle floats on water. (a) False (b) True
17. 17.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) the straw is heavy (c) the string pulls it (d) escaping air pushes it
18. 18.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
19. 19.🍯 Which of these is denser than water? (a) an ice cube (b) cooking oil (c) a coin (d) a ping-pong ball
20. 20.True or false: a medicine dropper works by magnetism. (a) False (b) True
21. 21.🧺 Do we need honey for the density tower? (a) not needed (b) needed
22. 22.⚖️ 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
23. 23.🚁 Which of these falls fast through the air? (a) a toy parachute (b) a feather (c) a crumpled paper ball (d) an open sheet of paper
24. 24.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is less dense (c) ice is magnetic (d) ice is very cold
25. 25.💧 What happens to water vapour when it touches the cold cling film? (a) it disappears (b) it turns to drops (c) it turns to smoke (d) it turns to salt
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
27. 27.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) oil turns into honey (c) oil makes it rain (d) spilled oil is slippery
28. 28.🔍 Which is the odd one out? (a) a stone (b) a glass marble (c) a coin (d) a feather
29. 29.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) sawdust (d) table salt
30. 30.True or false: an ice cube floats on water. (a) True (b) False
31. 31.🧺 Do we need safety scissors for the paper helicopter? (a) needed (b) not needed
32. 32.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
33. 33.🛟 How should you check if the sugar has dissolved? (a) taste it (b) look for leftover grains (c) poke it with a finger (d) smell it closely
34. 34.🔍 Which is the odd one out? (a) a coin (b) a paper helicopter (c) a feather (d) an open sheet of paper
35. 35.🧺 Do we need cold water for the dissolving test? (a) needed (b) not needed
36. 36.True or false: a sugar cube does not let water climb. (a) True (b) False
37. 37.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a balloon (c) honey (d) a tall clear glass
38. 38.⚖️ 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 same three liquids (b) the order of the layers (c) the order of pouring
39. 39.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True

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