Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 395 · 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.⚖️ 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) the length of the stem (d) time for colour to show
2. 2.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) a battery cell (d) a tub of water
3. 3.🧺 Which of these is not needed for the dissolving test? (a) a mirror (b) sugar (c) two clear glasses (d) warm water
4. 4.True or false: a battery cell is not needed for the float-or-sink test. (a) False (b) True
5. 5.🔮 Predict: you add two more paper clips. How does it fall? (a) it stops in the air (b) faster (c) slower (d) it floats up
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a glass of water (c) food colour (d) a few hours of waiting
8. 8.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
9. 9.🧺 Which of these is needed for the water cycle bowl? (a) yeast (b) a small cup (c) turmeric powder (d) a balloon
10. 10.True or false: honey is denser than water. (a) False (b) True
11. 11.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil attracts magnets (c) spilled oil is slippery (d) oil turns into honey
12. 12.🛟 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
13. 13.🧺 Do we need a balloon for the density tower? (a) not needed (b) needed
14. 14.📘 What pulls the paper helicopter down to the floor? (a) the wind (b) magnetism (c) gravity (d) air pressure
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we change it (c) we measure it
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
17. 17.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
18. 18.True or false: drops under a pot lid is evaporation. (a) True (b) False
19. 19.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the kind of clay (c) the shape of the clay
20. 20.⚖️ 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 change it (b) we keep it the same (c) we measure it
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) the same tape (c) the slope of the string (d) the same straw
22. 22.🔍 Which is the odd one out? (a) a cork (b) a glass marble (c) a coin (d) a pebble
23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
24. 24.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to make it rain (d) to catch any spills
25. 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the shape of the clay (b) the amount of clay (c) whether it floats (d) the kind of clay
26. 26.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) more plain water (c) lots of salt stirred in (d) a few ice cubes
27. 27.⚖️ 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 change it (b) we keep it the same (c) we measure it
28. 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) True (b) False
29. 29.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
30. 30.💧 Which of these is evaporation? (a) a misty bathroom mirror (b) a puddle drying up (c) butter going runny (d) snow turning to water
31. 31.🥄 Which of these dissolves in water? (a) sand (b) chalk powder (c) sawdust (d) baking soda
32. 32.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
33. 33.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) sharp kitchen shears (c) a paper cutter (d) gardening shears
34. 34.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
35. 35.💧 Which of these lets water climb up it? (a) a piece of foil (b) a flower stem (c) a glass marble (d) a rubber eraser
36. 36.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) sugar (c) cotton wool (d) a teaspoon
37. 37.True or false: a pebble is less dense than water. (a) True (b) False
38. 38.True or false: yeast is needed for the balloon rocket. (a) False (b) True
39. 39.💧 Which of these does not let water climb? (a) a rubber eraser (b) a paper towel (c) a strip of cloth (d) a flower stem
40. 40.🔍 Which is the odd one out? (a) a paper helicopter (b) a steel spoon (c) a fluff of cotton (d) a feather

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