Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 558 · 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.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to salt (b) it turns to ice (c) some water evaporates (d) the water increases
2. 2.⚖️ 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) the way we turn it (b) the same glass (c) how full the glass is (d) whether the card stays
3. 3.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the order of pouring (b) the same three liquids (c) the same glass (d) the order of the layers
4. 4.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) leave water on the floor (c) run around the tub (d) wipe up spills at once
5. 5.True or false: a mirror is needed for the dissolving test. (a) True (b) False
6. 6.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) a mirror (c) honey (d) a tall clear glass
7. 7.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the kind of paper (b) the length of the blades (c) time to reach the floor
8. 8.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
9. 9.🛟 What should you do with wet floors after the experiment? (a) pour more water (b) wipe them dry (c) slide on them (d) leave them wet
10. 10.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is kept the same. (a) True (b) False
11. 11.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a long string (c) yeast (d) a balloon
12. 12.🔍 Which is the odd one out? (a) a puddle drying up (b) wet hair drying (c) butter going runny (d) wet clothes drying
13. 13.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed
14. 14.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a magnetic pin holder (d) a suction hook
15. 15.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) turmeric powder
16. 16.🌈 In VIBGYOR, what number colour is violet?
17. 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) False (b) True
18. 18.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
19. 19.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) slower (b) they never dry (c) faster (d) they turn to ice
20. 20.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the petals turn bluish (d) the water turns green
21. 21.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a battery cell (b) safety scissors (c) a pencil (d) a strip of paper
22. 22.🧺 Which of these is needed for the water cycle bowl? (a) a mirror (b) sunlight (c) a magnet (d) turmeric powder
23. 23.True or false: a paper clip is needed for the paper helicopter. (a) False (b) True
24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is the one thing we change. (a) True (b) False
25. 25.🍯 Is a glass marble denser or less dense than water? (a) denser than water (b) less dense than water
26. 26.🔍 Which is the odd one out? (a) a coin (b) a crumpled paper ball (c) a stone (d) a feather
27. 27.🧺 Which of these is not needed for the density tower? (a) a battery cell (b) cooking oil (c) a tall clear glass (d) water with food colour
28. 28.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) capillary action (d) melting
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) do not lick the spoon (c) throw the glass (d) taste each layer
31. 31.True or false: a spoon is needed for the density tower. (a) False (b) True
32. 32.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a balloon (c) yeast (d) two chairs
33. 33.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a drinking straw (c) turmeric powder (d) sticky tape
34. 34.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they mix for ever (c) they become solid (d) they separate again
35. 35.🍯 Which of these is less dense than water? (a) a glass marble (b) a coin (c) a cork (d) very salty water
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) False (b) True
37. 37.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) air pressure (c) sunlight (d) friction
38. 38.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil attracts magnets (c) oil turns into honey (d) spilled oil is slippery
39. 39.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it turns blue (d) so it does not fall
40. 40.🧺 Do we need a paper clip for the paper helicopter? (a) needed (b) not needed

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