Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 322 · 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.🧺 Do we need turmeric powder for the paper helicopter? (a) needed (b) not needed
2. 2.True or false: turmeric powder is needed for the water cycle bowl. (a) False (b) True
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is kept the same. (a) True (b) False
5. 5.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they mix for ever (b) they turn to honey (c) they become solid (d) they separate again
6. 6.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
7. 7.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) a strip of paper (c) a balloon (d) a ruler
8. 8.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is kept the same. (a) True (b) False
9. 9.⚖️ 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
10. 10.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) look at it through glass (d) stare at the Sun
11. 11.True or false: a cork is denser than water. (a) False (b) True
12. 12.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a sink or a bucket (d) turmeric powder
14. 14.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it turns into a kite (c) it can pop loudly (d) it gets too heavy
15. 15.🔍 Which is the odd one out? (a) snow turning to water (b) making ice lollies (c) ice becoming water (d) butter going runny
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) False (b) True
17. 17.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns all red (d) it turns brighter
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) True (b) False
19. 19.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
20. 20.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) a magnet (d) a balloon
21. 21.🧺 Which of these is needed for the density tower? (a) a balloon (b) a magnet (c) turmeric powder (d) cooking oil
22. 22.True or false: a strip of paper is not needed for the paper helicopter. (a) False (b) True
23. 23.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
24. 24.🚁 Why does the paper helicopter fall slowly? (a) air pushes on its blades (b) it has no weight (c) a magnet holds it (d) the floor pushes it
25. 25.🧺 Do we need a pencil for the paper helicopter? (a) not needed (b) needed
26. 26.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) red (c) green (d) blue
27. 27.True or false: water with food colour is not needed for the density tower. (a) False (b) True
28. 28.True or false: honey is not needed for the density tower. (a) False (b) True
29. 29.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) play near a deep pond (d) wipe up spills at once
30. 30.🛟 Which of these floats on water? (a) a metal key (b) a steel spoon (c) a coin (d) a feather
31. 31.True or false: a fluff of cotton falls fast through the air. (a) True (b) False
32. 32.🌈 How many colours do we name in a rainbow (VIBGYOR)?
33. 33.⚖️ 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 amount of clay (b) the shape of the clay (c) whether it floats (d) the kind of clay
34. 34.🧺 Which of these is not needed for the density tower? (a) a spoon (b) honey (c) cooking oil (d) turmeric powder
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) True (b) False
36. 36.🧺 Do we need a mirror for the paper helicopter? (a) not needed (b) needed
37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) True (b) False
38. 38.🧺 Do we need a magnet for the water cycle bowl? (a) needed (b) not needed
39. 39.🧺 Which of these is not needed for the water cycle bowl? (a) ice cubes (b) a small cup (c) water (d) a magnet
40. 40.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) pour it on the floor (c) taste each layer (d) throw the glass

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