Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 236 · 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.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
2. 2.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) sun or shade (b) how many drops form (c) the cling film cover (d) the amount of water
3. 3.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) neither of them (c) the big log (d) the small pebble
4. 4.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the water turns green (d) the petals turn bluish
5. 5.True or false: small test objects is needed for the float-or-sink test. (a) True (b) False
6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is the one thing we change. (a) True (b) False
7. 7.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
8. 8.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil makes it rain (c) oil attracts magnets (d) spilled oil is slippery
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a towel (c) a glass of water (d) a sink or a bucket
10. 10.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) many colours mixed (d) tiny drops of water
11. 11.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
12. 12.🌈 How many colours do we name in a rainbow (VIBGYOR)?
13. 13.True or false: yeast is not needed for the paper helicopter. (a) True (b) False
14. 14.🧺 Do we need turmeric powder for the water cycle bowl? (a) needed (b) not needed
15. 15.🥄 Why does sugar dissolve faster in warm water? (a) cold water is wet (b) sugar likes the dark (c) particles move faster (d) warm water is thicker
16. 16.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is the one thing we change. (a) False (b) True
17. 17.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) air pressure (d) magnetism
18. 18.💧 Which change is this: drops on a cold glass? (a) condensation (b) evaporation (c) freezing (d) melting
19. 19.⚖️ 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 order of the layers (b) the order of pouring (c) the same three liquids
20. 20.🔍 Which is the odd one out? (a) a fluff of cotton (b) a steel spoon (c) a feather (d) a toy parachute
21. 21.🥛 Which of these works by magnetism? (a) a compass needle (b) a bicycle pump (c) a suction hook (d) a drinking straw
22. 22.True or false: water with food colour is not needed for the density tower. (a) True (b) False
23. 23.🔮 Predict: you fold the two blades the other way. What changes? (a) it spins the other way (b) it falls upward (c) it does not fall (d) it turns blue
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the kind of flower (b) the room it stands in (c) time for colour to show (d) the length of the stem
25. 25.True or false: a magnetic chess set works by magnetism. (a) True (b) False
26. 26.🧺 Do we need a magnet for the water cycle bowl? (a) needed (b) not needed
27. 27.True or false: an ice cube is less dense than water. (a) True (b) False
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.⚖️ 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 same three liquids”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.🔍 Which is the odd one out? (a) wet hair drying (b) a puddle drying up (c) sweat drying on skin (d) dew on morning grass
31. 31.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) water with food colour (c) honey (d) a mirror
32. 32.True or false: a ball of clay floats on water. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) butter going runny (b) wet clothes drying (c) sweat drying on skin (d) a puddle drying up
34. 34.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a pencil (c) turmeric powder (d) a paper clip
35. 35.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
36. 36.🍯 Why does honey sink to the bottom of the glass? (a) it is the stickiest (b) it is yellow (c) it is the coldest (d) it is the densest
37. 37.🚁 Which of these falls slowly through the air? (a) a coin (b) a glass marble (c) a paper helicopter (d) a stone
38. 38.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it became air (c) it spread in the water (d) it vanished for ever
39. 39.⚖️ 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 change it (b) we keep it the same (c) we measure it
40. 40.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we keep it the same (b) we change it (c) we measure it

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