Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 943 · 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.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) turmeric powder (c) a drinking straw (d) a balloon
2. 2.🔍 Which is the odd one out? (a) a coin (b) an empty capped bottle (c) a ball of clay (d) an iron nail
3. 3.⚖️ 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
4. 4.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) more drops form (b) fewer drops form (c) the water turns red (d) the bowl freezes
5. 5.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
6. 6.🧺 Which of these is needed for the water cycle bowl? (a) a magnet (b) a battery cell (c) turmeric powder (d) a small cup
7. 7.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to win a prize (c) to splash everyone (d) to hide the corks
8. 8.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) run around the tub (c) play near a deep pond (d) leave water on the floor
9. 9.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we change it (b) we keep it the same (c) we measure it
10. 10.⚖️ 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 kind of clay (b) the amount of clay (c) the shape of the clay (d) whether it floats
11. 11.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) cooking oil (b) air (c) an ice cube (d) a coin
13. 13.🧺 Which of these is needed for the paper helicopter? (a) a mirror (b) yeast (c) a ruler (d) a battery cell
14. 14.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a mirror (c) a teaspoon (d) warm water
15. 15.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) yeast (c) water with food colour (d) honey
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) food colour (d) a magnet
17. 17.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
18. 18.🧺 Do we need a magnet for the water cycle bowl? (a) needed (b) not needed
19. 19.🧺 Do we need yeast for the water cycle bowl? (a) needed (b) not needed
20. 20.⚖️ 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 the layers”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.⚖️ 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
22. 22.True or false: a balloon is needed for the water rainbow. (a) True (b) False
23. 23.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the amount of water (b) the size of the bowl (c) the cling film cover (d) how many drops form
24. 24.🔍 Which is the odd one out? (a) a stone (b) a glass marble (c) a feather (d) a steel spoon
25. 25.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) water with food colour (c) cooking oil (d) turmeric powder
26. 26.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a tub of water (c) turmeric powder (d) a magnet
27. 27.⚖️ 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) True (b) False
28. 28.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a battery cell (b) two chairs (c) sticky tape (d) a drinking straw
29. 29.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) False (b) True
31. 31.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same glass (b) the order of pouring (c) how much of each liquid (d) the same three liquids
32. 32.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
33. 33.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it through glass (c) look at it in a mirror (d) stare at the Sun
34. 34.🔮 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
35. 35.⚖️ 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 measure it (b) we change it (c) we keep it the same
36. 36.True or false: warm water is not needed for the dissolving test. (a) False (b) True
37. 37.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a magnet (c) a sheet of white paper (d) a sunny window
38. 38.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.💧 Which of these is condensation? (a) drops on a cold glass (b) water becoming ice (c) wet clothes drying (d) a pond icing over
40. 40.💧 In the covered bowl, where does the water vapour come from? (a) the cling film (b) the air outside (c) the bowl itself (d) water warmed by the Sun

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