Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 599 · 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 a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) the slope of the string (c) how big we blow it
2. 2.True or false: a ball of clay floats on water. (a) False (b) True
3. 3.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is kept the same. (a) True (b) False
4. 4.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to cool the glass (d) to grow plants
5. 5.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a towel for spills (c) yeast (d) a results table
6. 6.⚖️ 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 measure it (b) we change it (c) we keep it the same
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) True (b) False
8. 8.⚖️ 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 change it (b) we measure it (c) we keep it the same
9. 9.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) the amount of water (b) how many drops form (c) sun or shade
10. 10.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it through glass (d) look at it in a mirror
11. 11.⚖️ 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 keep it the same (b) we measure it (c) we change it
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) a dry leaf (b) a piece of thermocol (c) an empty capped bottle (d) a steel spoon
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the shape of the clay (b) the kind of clay (c) the tub of water (d) whether it floats
16. 16.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.🧺 Which of these is not needed for the density tower? (a) a spoon (b) yeast (c) water with food colour (d) cooking oil
18. 18.True or false: cooking oil is not needed for the density tower. (a) False (b) True
19. 19.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
20. 20.True or false: sugar stirred well dissolves faster. (a) False (b) True
21. 21.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) clouds (d) prisms
22. 22.🧺 Do we need a battery cell for the paper helicopter? (a) not needed (b) needed
23. 23.🧺 Do we need a small cup for the water cycle bowl? (a) not needed (b) needed
24. 24.🚁 Why does the paper helicopter fall slowly? (a) a magnet holds it (b) air pushes on its blades (c) the floor pushes it (d) it has no weight
25. 25.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) two clear glasses (c) a mirror (d) warm water
26. 26.🚁 Which of these falls slowly through the air? (a) a crumpled paper ball (b) a stone (c) a coin (d) a paper helicopter
27. 27.True or false: drops on a cold glass is melting. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a drinking straw
29. 29.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
30. 30.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
31. 31.🧺 Do we need cooking oil for the density tower? (a) needed (b) not needed
32. 32.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) magnetism (d) melting
33. 33.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it floats (c) it bounces up (d) it sinks
34. 34.🧺 Do we need safety scissors for the paper helicopter? (a) needed (b) not needed
35. 35.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) keep them in your mouth (c) chew them (d) throw them away safely
36. 36.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is the one thing we change. (a) False (b) True
37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) False (b) True
38. 38.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it vanished for ever (c) it became air (d) it sank as sand
39. 39.True or false: an open sheet of paper falls fast through the air. (a) False (b) True
40. 40.🍯 Which of these is less dense than water? (a) honey (b) a coin (c) a glass marble (d) cooking oil

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