Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 159 · 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.🧺 Which of these is not needed for the paper helicopter? (a) a pencil (b) a ruler (c) turmeric powder (d) a strip of paper
2. 2.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a mirror (c) a stiff postcard (d) a sink or a bucket
4. 4.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a glass of water (d) yeast
5. 5.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through tiny stem tubes (d) through the air
6. 6.🔮 Predict: you add two more paper clips. How does it fall? (a) it floats up (b) it stops in the air (c) slower (d) faster
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) yeast (c) a sheet of white paper (d) a clear glass of water
8. 8.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it turns into a kite (c) it gets too heavy (d) it can pop loudly
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) turmeric powder
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a stiff postcard (c) a balloon (d) a glass of water
11. 11.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
12. 12.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we measure it (b) we change it (c) we keep it the same
13. 13.🔍 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
14. 14.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the same glass (b) the way we turn it (c) the same card (d) how full the glass is
15. 15.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
16. 16.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
17. 17.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the flat sheet (b) the crumpled ball (c) neither of them (d) a sheet of glass
18. 18.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) petals are magnetic (d) the stem is hot
19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) True (b) False
20. 20.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls slowly (b) falls fast
21. 21.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
22. 22.🍯 Is air denser or less dense than water? (a) less dense than water (b) denser than water
23. 23.🔍 Which is the odd one out? (a) an open sheet of paper (b) a coin (c) a steel spoon (d) a stone
24. 24.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
25. 25.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a vacuum cleaner (d) a fridge magnet
26. 26.True or false: a coin is less dense than water. (a) True (b) False
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we keep it the same (b) we change it (c) we measure it
28. 28.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a magnet (b) water with food colour (c) a spoon (d) a tall clear glass
29. 29.🚀 Which of these goes forward? (a) the rowing boat (b) air from the balloon (c) gas from the rocket (d) water from the oars
30. 30.💧 Which of these is melting? (a) ice becoming water (b) water becoming ice (c) a misty bathroom mirror (d) wet clothes drying
31. 31.🔍 Which is the odd one out? (a) a compass needle (b) a suction hook (c) a fridge magnet (d) a magnetic chess set
32. 32.True or false: cooking oil is not needed for the density tower. (a) False (b) True
33. 33.True or false: cling film is needed for the water cycle bowl. (a) True (b) False
34. 34.🧺 Do we need a magnet for the density tower? (a) needed (b) not needed
35. 35.True or false: a magnet is not needed for the balloon rocket. (a) False (b) True
36. 36.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
37. 37.🚀 Which of these goes forward? (a) water from the oars (b) the rocket (c) gas from the rocket (d) air from the balloon
38. 38.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) a long string (c) a balloon (d) sticky tape
39. 39.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) a balloon (c) cling film (d) a small cup
40. 40.🛟 Does a coin float or sink in water? (a) floats (b) sinks

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