Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 739 · 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.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) look at it through glass (d) stare at the Sun
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a battery cell (c) a magnet (d) turmeric powder
3. 3.🍯 Why does honey sink to the bottom of the glass? (a) it is the stickiest (b) it is the coldest (c) it is the densest (d) it is yellow
4. 4.True or false: two clear glasses is not needed for the dissolving test. (a) True (b) False
5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
6. 6.True or false: a magnet is not needed for the water cycle bowl. (a) False (b) True
7. 7.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is the one thing we change. (a) False (b) True
8. 8.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) False (b) True
9. 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) the same tape (c) how big we blow it
11. 11.🧺 Do we need a balloon for the paper helicopter? (a) needed (b) not needed
12. 12.⚖️ 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 “how much of each liquid”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
14. 14.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a balloon (c) a strip of paper (d) a pencil
15. 15.🛟 Which of these floats on water? (a) an iron nail (b) a coin (c) an empty capped bottle (d) a pebble
16. 16.🚁 What does the paper helicopter do as it falls? (a) it stays still in air (b) it flies upward (c) it turns into a ball (d) it spins round
17. 17.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) True (b) False
18. 18.🧺 Which of these is needed for the paper helicopter? (a) turmeric powder (b) yeast (c) a paper clip (d) a magnet
19. 19.True or false: a suction hook works by air pressure. (a) False (b) True
20. 20.🚁 Which of these falls fast through the air? (a) a toy parachute (b) a stone (c) a paper helicopter (d) a fluff of cotton
21. 21.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) whether the card stays (b) the same glass (c) how full the glass is
22. 22.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a battery cell (b) a small cup (c) a big bowl (d) sunlight
23. 23.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a balloon (c) cold water (d) two clear glasses
24. 24.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they turn to ice (b) slower (c) faster (d) they never dry
25. 25.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) pour it on the floor (c) do not lick the spoon (d) throw the glass
26. 26.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
27. 27.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) poke it with a finger (c) taste it (d) look for leftover grains
28. 28.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a sheet of white paper (d) a balloon
29. 29.True or false: drops on a cold glass is evaporation. (a) False (b) True
30. 30.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to drops (b) it disappears (c) it turns to salt (d) it turns to smoke
31. 31.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of chalk (c) a glass marble (d) a steel spoon
32. 32.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same string (b) distance it travels (c) how big we blow it
34. 34.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a small rainbow (d) a shadow of ice
35. 35.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is what we measure. (a) True (b) False
36. 36.🛟 Which of these sinks in water? (a) a feather (b) an ice-cream stick (c) a cork (d) a ball of clay
37. 37.⚖️ 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) whether it floats (c) the amount of clay (d) the kind of clay
38. 38.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
39. 39.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) orange (c) violet (d) red
40. 40.True or false: a comb is needed for the dissolving test. (a) True (b) False

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