Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 46 · 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: you add two more paper clips. How does it fall? (a) faster (b) it floats up (c) it stops in the air (d) slower
2. 2.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to splash everyone (c) to keep children safe (d) to win a prize
3. 3.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they mix for ever (b) they separate again (c) they turn to honey (d) they become solid
4. 4.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) sunlight (c) magnetism (d) friction
5. 5.True or false: safety scissors is not needed for the paper helicopter. (a) True (b) False
6. 6.☀️ What is white sunlight really made of? (a) many colours mixed (b) only yellow light (c) tiny bits of dust (d) tiny drops of water
7. 7.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.🛟 Which of these floats on water? (a) a coin (b) a ping-pong ball (c) a steel spoon (d) a glass marble
9. 9.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the amount of water (b) the water temperature (c) time to dissolve
10. 10.🧺 Do we need a small cup for the water cycle bowl? (a) needed (b) not needed
11. 11.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it dissolves (c) it turns blue (d) it settles at the bottom
12. 12.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a mirror (c) a balloon rocket (d) a sundial
13. 13.⚖️ 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 same three liquids (b) the order of the layers (c) the order of pouring (d) the same glass
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a glass of water (c) a towel (d) a sink or a bucket
15. 15.🧺 Which of these is not needed for the water cycle bowl? (a) a big bowl (b) cling film (c) turmeric powder (d) a small cup
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is kept the same. (a) False (b) True
17. 17.True or false: cooking oil is needed for the density tower. (a) False (b) True
18. 18.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) evaporation (c) refraction (d) reflection
19. 19.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
20. 20.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
21. 21.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil turns into honey (c) oil attracts magnets (d) spilled oil is slippery
22. 22.True or false: water a swimmer pushes goes backward. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a ping-pong ball (b) air (c) a pebble (d) a cork
24. 24.True or false: sugar in warm water dissolves slower. (a) False (b) True
25. 25.🌈 How many colours do we name in a rainbow (VIBGYOR)?
26. 26.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a tub of water (c) a towel for spills (d) a magnet
27. 27.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) False (b) True
28. 28.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) never look at the Sun (d) stare at the Sun
29. 29.🧺 Do we need honey for the density tower? (a) not needed (b) needed
30. 30.True or false: wet hair drying is evaporation. (a) False (b) True
31. 31.True or false: a glass marble falls fast through the air. (a) False (b) True
32. 32.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
33. 33.🔍 Which is the odd one out? (a) wet clothes drying (b) drops on a cold glass (c) sweat drying on skin (d) a puddle drying up
34. 34.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it became air (c) it sank as sand (d) it vanished for ever
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same glass (b) the time of day (c) the amount of water (d) brightness of rainbow
36. 36.🧺 Do we need a battery cell for the density tower? (a) not needed (b) needed
37. 37.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
40. 40.🔍 Which is the odd one out? (a) a misty bathroom mirror (b) drops on a cold glass (c) dew on morning grass (d) a puddle drying up

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