Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 223 · 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.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) poke it with a finger (c) smell it closely (d) taste it
2. 2.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) vinegar (c) two chairs (d) a balloon
3. 3.🍯 Is very salty water denser or less dense than water? (a) less dense than water (b) denser than water
4. 4.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a strip of paper (c) a mirror (d) a ruler
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the room it stands in (b) the amount of colour (c) the length of the stem (d) time for colour to show
6. 6.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) yeast (b) safety scissors (c) a ruler (d) a paper clip
7. 7.🧺 Which of these is needed for the density tower? (a) a mirror (b) a balloon (c) honey (d) yeast
8. 8.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) little air left inside (d) the card gets wet
9. 9.True or false: sand does not dissolve in water. (a) True (b) False
10. 10.True or false: a mirror is needed for the water cycle bowl. (a) True (b) False
11. 11.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a balloon (c) a strip of paper (d) a pencil
12. 12.True or false: a mirror is not needed for the float-or-sink test. (a) True (b) False
13. 13.⚖️ 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
14. 14.🧺 Do we need a balloon for the density tower? (a) not needed (b) needed
15. 15.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a magnet (c) small test objects (d) a mirror
16. 16.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a towel for spills (c) a balloon (d) small test objects
17. 17.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) pour more water (c) slide on them (d) wipe them dry
18. 18.🥄 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
19. 19.🚁 What does the paper helicopter do as it falls? (a) it spins round (b) it turns into a ball (c) it flies upward (d) it stays still in air
20. 20.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
21. 21.True or false: a drinking straw is needed for the balloon rocket. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) a steel spoon (b) a coin (c) an iron nail (d) an ice-cream stick
23. 23.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a steel spoon (d) a strip of cloth
24. 24.True or false: a mirror is not needed for the density tower. (a) True (b) False
25. 25.⚖️ 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
26. 26.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a balloon (c) turmeric powder (d) a battery cell
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a white flower (d) yeast
29. 29.⚖️ 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 kept the same. (a) False (b) True
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) brightness of rainbow (c) the same glass
32. 32.🔍 What do you see after pouring honey, water and oil into one glass? (a) the glass gets hot (b) one mixed colour (c) bubbles of gas (d) three separate layers
33. 33.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
34. 34.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the petals turn bluish (d) the water turns green
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a sink or a bucket (c) a mirror (d) a balloon
36. 36.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) wipe them on walls (d) lick your fingers
37. 37.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) stare at the Sun (d) never look at the Sun
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🍯 Is air denser or less dense than water? (a) denser than water (b) less dense than water
40. 40.⚖️ 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 “the same three liquids”? (a) we change it (b) we keep it the same (c) we measure it

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