Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 953 · 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.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it changes colour (c) it gets too heavy (d) it turns into a kite
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they separate again (b) they turn to honey (c) they mix for ever (d) they become solid
5. 5.True or false: a battery cell is needed for the balloon rocket. (a) False (b) True
6. 6.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the kind of flower (b) the length of the stem (c) time for colour to show
7. 7.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) powdered sugar (d) sugar left unstirred
8. 8.True or false: a magnet is needed for the balloon rocket. (a) True (b) False
9. 9.🥄 Which of these dissolves slower? (a) sugar left unstirred (b) sugar stirred well (c) powdered sugar (d) sugar in warm water
10. 10.🔮 Predict: you fold the two blades the other way. What changes? (a) it spins the other way (b) it does not fall (c) it falls upward (d) it turns blue
11. 11.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
12. 12.🧺 Which of these is needed for the water cycle bowl? (a) sunlight (b) a battery cell (c) yeast (d) a balloon
13. 13.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) yeast (c) a long string (d) sticky tape
14. 14.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to grow plants (d) to catch any spills
15. 15.True or false: warm water is not needed for the dissolving test. (a) True (b) False
16. 16.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) a sunny window (d) turmeric powder
17. 17.🔍 Which is the odd one out? (a) sawdust (b) table salt (c) glucose powder (d) sugar
18. 18.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) sun or shade (b) the amount of water (c) the cling film cover (d) how many drops form
19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) True (b) False
20. 20.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) evaporation (c) reflection (d) refraction
21. 21.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
22. 22.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a ruler (c) yeast (d) a pencil
24. 24.True or false: a piece of thermocol sinks in water. (a) False (b) True
25. 25.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) yeast (c) a towel for spills (d) a results table
26. 26.🧺 Which of these is not needed for the density tower? (a) honey (b) a tall clear glass (c) cooking oil (d) a magnet
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is the one thing we change. (a) False (b) True
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) True (b) False
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) brightness of rainbow (b) the same white paper (c) the amount of water (d) the time of day
31. 31.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to splash everyone (c) to win a prize (d) to hide the corks
32. 32.True or false: drops under a pot lid is freezing. (a) True (b) False
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) turmeric powder (d) bright sunlight
34. 34.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
35. 35.🧺 Do we need a mirror for the paper helicopter? (a) needed (b) not needed
36. 36.True or false: a flower stem lets water climb up it. (a) True (b) False
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the kind of clay
38. 38.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the paper clip (b) the length of the blades (c) the person dropping (d) the kind of paper
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a white flower (d) a mirror
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) False (b) True

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