Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 463 · 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.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it changes colour (c) it turns into a kite (d) it gets too heavy
2. 2.🧺 Which of these is needed for the paper helicopter? (a) a balloon (b) a battery cell (c) a magnet (d) a strip of paper
3. 3.⚖️ 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 measure it (b) we change it (c) we keep it the same
4. 4.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
5. 5.True or false: table salt dissolves in water. (a) False (b) True
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the slope of the string (b) how big we blow it (c) distance it travels
7. 7.💧 Which of these is evaporation? (a) wet hair drying (b) a misty bathroom mirror (c) drops on a cold glass (d) making ice lollies
8. 8.🚁 Which of these falls slowly through the air? (a) a steel spoon (b) a crumpled paper ball (c) a feather (d) a coin
9. 9.🫗 Why does cooking oil float on top of water? (a) oil is heavier (b) oil is less dense (c) oil is hot (d) oil is sticky
10. 10.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
11. 11.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) many colours mixed (d) tiny bits of dust
12. 12.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) spilled oil is slippery (c) oil attracts magnets (d) oil makes it rain
13. 13.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) the tub of water (c) whether it floats
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) turmeric powder (d) a balloon
15. 15.📘 What is the push of air on a falling thing called? (a) floating (b) air resistance (c) magnetism (d) dissolving
16. 16.🧺 Do we need a mirror for the density tower? (a) not needed (b) needed
17. 17.🚀 Which of these goes backward? (a) the rowing boat (b) the swimmer (c) the rocket (d) water a swimmer pushes
18. 18.True or false: sawdust does not dissolve in water. (a) True (b) False
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) distance it travels (b) how big we blow it (c) the slope of the string (d) the same tape
20. 20.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
21. 21.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) a spoon (c) a balloon (d) a magnet
22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) False (b) True
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.🚁 Which of these falls slowly through the air? (a) a glass marble (b) a stone (c) a toy parachute (d) a crumpled paper ball
25. 25.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) safety scissors (c) gardening shears (d) sharp kitchen shears
26. 26.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) honey (c) sugar (d) cold water
27. 27.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.⚖️ 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 keep it the same (c) we measure it
29. 29.🔍 Which is the odd one out? (a) a pond icing over (b) water becoming ice (c) sweat drying on skin (d) making ice lollies
30. 30.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
31. 31.🚁 Which of these falls slowly through the air? (a) a coin (b) a paper helicopter (c) a glass marble (d) a stone
32. 32.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
33. 33.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is the one thing we change. (a) False (b) True
34. 34.⚖️ 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) the amount of water (b) the size of the bowl (c) the time we wait (d) sun or shade
35. 35.True or false: a metal key sinks in water. (a) True (b) False
36. 36.🍯 Is a coin denser or less dense than water? (a) denser than water (b) less dense than water
37. 37.⚖️ 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) True (b) False
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) False (b) True
39. 39.🧺 Do we need a strip of paper for the paper helicopter? (a) not needed (b) needed
40. 40.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed

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