Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 540 · 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 float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a tub of water (d) turmeric powder
2. 2.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) oil makes it rain (c) oil turns into honey (d) spilled oil is slippery
3. 3.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a balloon (d) a sink or a bucket
4. 4.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) how much of each liquid (b) the same three liquids (c) the order of the layers (d) the order of pouring
5. 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) True (b) False
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is what we measure. (a) True (b) False
7. 7.🌈 How many colours do we name in a rainbow (VIBGYOR)?
8. 8.True or false: sugar left unstirred dissolves slower. (a) False (b) True
9. 9.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) air pressure (c) sunlight (d) friction
10. 10.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) more plain water (c) a few ice cubes (d) lots of salt stirred in
11. 11.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is the one thing we change. (a) True (b) False
12. 12.🧺 Do we need a paper clip for the paper helicopter? (a) not needed (b) needed
13. 13.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it dissolves (c) it still floats (d) it turns white
14. 14.🧺 Do we need cling film for the water cycle bowl? (a) needed (b) not needed
15. 15.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a battery cell (c) a drinking straw (d) yeast
16. 16.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
17. 17.🧺 Do we need a small cup for the water cycle bowl? (a) not needed (b) needed
18. 18.🧺 Which of these is not needed for the paper helicopter? (a) a pencil (b) a paper clip (c) a battery cell (d) a strip of paper
19. 19.🧺 Which of these is needed for the density tower? (a) a magnet (b) a mirror (c) turmeric powder (d) a tall clear glass
20. 20.💧 Which change is this: wet hair drying? (a) evaporation (b) condensation (c) freezing (d) melting
21. 21.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) it has a magnet (c) steel is very light (d) its hollow shape
22. 22.🛟 Where is a safe place to drop the helicopter from? (a) a high window ledge (b) a roof edge (c) a wobbly chair (d) from your raised hand
23. 23.🍯 Is a coin denser or less dense than water? (a) less dense than water (b) denser than water
24. 24.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a shadow of ice (c) snow falling (d) a magnet
25. 25.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a tub of water (c) yeast (d) small test objects
26. 26.True or false: sugar in warm water dissolves slower. (a) False (b) True
27. 27.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
28. 28.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a balloon (c) a clear glass of water (d) turmeric powder
29. 29.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
30. 30.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.🔍 Which is the odd one out? (a) very salty water (b) air (c) a cork (d) an ice cube
35. 35.True or false: cling film is not needed for the water cycle bowl. (a) True (b) False
36. 36.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the bowl freezes (b) the water turns red (c) more drops form (d) fewer drops form
37. 37.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it is sprayed on (c) through the air (d) it rains on them
38. 38.🥄 Which of these dissolves slower? (a) a big sugar cube (b) sugar stirred well (c) powdered sugar (d) sugar in warm water
39. 39.⚖️ 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 tub of water (b) the amount of clay (c) the shape of the clay (d) whether it floats
40. 40.🚀 Which of these goes forward? (a) gas from the rocket (b) water a swimmer pushes (c) water from the oars (d) the balloon

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