Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 269 · 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 coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a magnet (d) a few hours of waiting
2. 2.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to cool the glass (c) to grow plants (d) to make it rain
3. 3.True or false: a bicycle pump works by air pressure. (a) False (b) True
4. 4.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it can pop loudly (c) it changes colour (d) it turns into a kite
5. 5.🍯 Which of these is denser than water? (a) cooking oil (b) a ping-pong ball (c) a cork (d) very salty water
6. 6.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
7. 7.💧 Which of these is condensation? (a) a puddle drying up (b) drops under a pot lid (c) water becoming ice (d) snow turning to water
8. 8.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
9. 9.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is what we measure. (a) False (b) True
10. 10.🥄 Which of these does not dissolve in water? (a) sand (b) food colour (c) sugar (d) baking soda
11. 11.True or false: a pebble is less dense than water. (a) True (b) False
12. 12.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
13. 13.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) two clear glasses (c) a balloon (d) sugar
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) an open sheet of paper (b) a steel spoon (c) a glass marble (d) a coin
16. 16.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
17. 17.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
18. 18.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a drinking straw
19. 19.🌈 How many colours do we name in a rainbow (VIBGYOR)?
20. 20.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) on top of the oil (c) under the honey (d) in the honey layer
21. 21.🍯 Which of these is denser than water? (a) an ice cube (b) a ping-pong ball (c) honey (d) a cork
22. 22.🥛 Which of these works by magnetism? (a) a suction hook (b) a magnetic chess set (c) a medicine dropper (d) a drinking straw
23. 23.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) a tub of water (c) small test objects (d) a towel for spills
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) honey (c) a mirror (d) warm water
26. 26.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is kept the same. (a) False (b) True
27. 27.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
28. 28.True or false: yeast is needed for the balloon rocket. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic chess set (c) a magnetic pin holder (d) a compass needle
30. 30.🧺 Which of these is needed for the water cycle bowl? (a) a magnet (b) yeast (c) a small cup (d) a balloon
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) False (b) True
32. 32.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a battery cell (c) yeast (d) bright sunlight
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a results table (d) a magnet
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) False (b) True
36. 36.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) yeast (c) a mirror (d) a spoon
37. 37.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
38. 38.🛟 Which of these floats on water? (a) a glass marble (b) a pebble (c) an empty capped bottle (d) a metal key
39. 39.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we keep it the same (b) we measure it (c) we change it

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