Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 389 · 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 — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of pouring”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) water with food colour (c) honey (d) a battery cell
3. 3.🔮 Predict: you add two more paper clips. How does it fall? (a) slower (b) faster (c) it floats up (d) it stops in the air
4. 4.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) warm water (c) two clear glasses (d) a balloon
5. 5.🔮 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
6. 6.⚖️ 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 measure it (b) we keep it the same (c) we change it
7. 7.⚖️ 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 same glass (b) brightness of rainbow (c) the amount of water
8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.True or false: turmeric powder is not needed for the paper helicopter. (a) True (b) False
10. 10.🧺 Which of these is not needed for the paper helicopter? (a) a battery cell (b) a strip of paper (c) a pencil (d) safety scissors
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a magnet (c) a white flower (d) a few hours of waiting
12. 12.🥄 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
13. 13.True or false: turmeric powder is not needed for the water cycle bowl. (a) True (b) False
14. 14.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) pour it on the floor (c) taste each layer (d) do not lick the spoon
15. 15.🛟 Which of these sinks in water? (a) a feather (b) a cork (c) an iron nail (d) an ice cube
16. 16.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) sawdust (d) food colour
17. 17.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) sugar (c) two clear glasses (d) a clock or timer
18. 18.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it settles at the bottom (c) it dissolves (d) it floats up
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we change it (b) we measure it (c) we keep it the same
21. 21.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) a magnet (c) a drinking straw (d) yeast
22. 22.🚀 Which of these goes forward? (a) air from the balloon (b) water from the oars (c) water a swimmer pushes (d) the balloon
23. 23.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.True or false: glucose powder does not dissolve in water. (a) True (b) False
25. 25.⚖️ 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 amount of colour (b) the kind of flower (c) the amount of water (d) time for colour to show
26. 26.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they separate again (c) they become solid (d) they mix for ever
27. 27.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it will not break (d) it is magnetic
28. 28.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
29. 29.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
30. 30.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) sunlight (d) magnetism
31. 31.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) lightning (b) sunshine (c) rain (d) wind
32. 32.💧 Which change is this: ice becoming water? (a) evaporation (b) condensation (c) melting (d) freezing
33. 33.🔍 Which is the odd one out? (a) a pebble (b) very salty water (c) honey (d) air
34. 34.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a coin (d) a feather
35. 35.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a piece of chalk (d) a plastic ruler
36. 36.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) two chairs (c) a balloon (d) a mirror
37. 37.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.⚖️ 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 glass”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns brighter (d) it turns all red

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