Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 171 · 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.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
3. 3.🚁 Dropped from a raised hand, does a toy parachute fall slowly or fast? (a) falls slowly (b) falls fast
4. 4.True or false: a misty bathroom mirror is condensation. (a) True (b) False
5. 5.🧺 Do we need turmeric powder for the water cycle bowl? (a) needed (b) not needed
6. 6.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) the sugar cube (c) both the same (d) powdered sugar
7. 7.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) how full the glass is (b) the same glass (c) the way we turn it (d) whether the card stays
9. 9.True or false: honey is needed for the dissolving test. (a) True (b) False
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) an ice cube (b) a cork (c) a ping-pong ball (d) a coin
12. 12.🧺 Which of these is not needed for the water cycle bowl? (a) sunlight (b) a small cup (c) turmeric powder (d) water
13. 13.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we measure it (c) we change it
14. 14.True or false: a big sugar cube dissolves faster. (a) True (b) False
15. 15.True or false: yeast is not needed for the water cycle bowl. (a) False (b) True
16. 16.🚀 Which of these goes backward? (a) the swimmer (b) the rocket (c) the balloon (d) water from the oars
17. 17.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) the same window (c) brightness of rainbow
19. 19.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.💧 Which change is this: snow turning to water? (a) freezing (b) evaporation (c) condensation (d) melting
21. 21.True or false: a battery cell is not needed for the water cycle bowl. (a) True (b) False
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
23. 23.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
24. 24.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) water with food colour (c) a battery cell (d) a spoon
25. 25.True or false: an iron nail floats on water. (a) False (b) True
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same tape (b) how big we blow it (c) the same straw (d) distance it travels
27. 27.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a balloon (c) a towel for spills (d) a magnet
28. 28.🔮 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 catch any spills (d) to grow plants
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) yeast (c) a towel for spills (d) small test objects
31. 31.💧 Which of these does not let water climb? (a) a steel spoon (b) a strip of cloth (c) a piece of chalk (d) a cotton thread
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a bicycle pump (d) a magnetic chess set
34. 34.True or false: a results table is not needed for the float-or-sink test. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) a ping-pong ball (b) a cork (c) a dry leaf (d) a ball of clay
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is what we measure. (a) True (b) False
37. 37.🧺 Do we need a battery cell for the float-or-sink test? (a) not needed (b) needed
38. 38.True or false: a coin floats on water. (a) True (b) False
39. 39.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a suction hook (c) a magnetic chess set (d) a compass needle
40. 40.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) a mirror (d) small test objects

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