Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 177 · 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.True or false: turmeric powder is not needed for the density tower. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) a glass marble (b) a cotton thread (c) a rubber eraser (d) a plastic ruler
3. 3.🚁 Which of these falls slowly through the air? (a) a crumpled paper ball (b) a steel spoon (c) a stone (d) a fluff of cotton
4. 4.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
5. 5.🧺 Which of these is not needed for the density tower? (a) honey (b) cooking oil (c) a balloon (d) a tall clear glass
6. 6.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
7. 7.True or false: turmeric powder is not needed for the paper helicopter. (a) True (b) False
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) turmeric powder (c) a tall clear glass (d) cooking oil
10. 10.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a laptop (d) over a sink or bucket
11. 11.True or false: a mirror is needed for the balloon rocket. (a) False (b) True
12. 12.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) add more water (c) let the water evaporate (d) stir it more
13. 13.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a shadow of ice (d) a small rainbow
14. 14.💧 Which of these is evaporation? (a) making ice lollies (b) drops under a pot lid (c) a misty bathroom mirror (d) sweat drying on skin
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.🚁 Which of these falls slowly through the air? (a) a coin (b) a crumpled paper ball (c) a stone (d) an open sheet of paper
17. 17.True or false: a balloon is needed for the float-or-sink test. (a) True (b) False
18. 18.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) spilled oil is slippery (c) oil turns into honey (d) oil makes it rain
19. 19.🧺 Do we need a mirror for the density tower? (a) not needed (b) needed
20. 20.🚀 Which of these goes backward? (a) the swimmer (b) the rowing boat (c) the rocket (d) water a swimmer pushes
21. 21.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it turns blue (c) it floats higher (d) it sinks
22. 22.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) some stays undissolved (c) all of it dissolves (d) the sugar turns to salt
23. 23.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) small test objects (c) a magnet (d) a results table
24. 24.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) a big bowl (c) turmeric powder (d) water
26. 26.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) a few ice cubes (c) more plain water (d) a little shaking
27. 27.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is kept the same. (a) True (b) False
28. 28.🚁 Which of these falls fast through the air? (a) an open sheet of paper (b) a fluff of cotton (c) a toy parachute (d) a steel spoon
29. 29.🔮 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
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a balloon (c) a sink or a bucket (d) a stiff postcard
31. 31.True or false: an iron nail floats on water. (a) True (b) False
32. 32.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a balloon (c) water with food colour (d) a tall clear glass
33. 33.🧺 Do we need a balloon for the density tower? (a) not needed (b) needed
34. 34.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) neither of them (c) both of them (d) the small pebble
35. 35.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) its hollow shape (c) steel is very light (d) sea water is warm
36. 36.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
37. 37.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is kept the same. (a) True (b) False
38. 38.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
39. 39.True or false: a feather sinks in water. (a) False (b) True
40. 40.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) whether it floats (c) the shape of the clay

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