Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 879 · 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: a glass of water is needed for the coloured flower experiment. (a) False (b) True
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) False (b) True
4. 4.🧺 Do we need cooking oil for the density tower? (a) needed (b) not needed
5. 5.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a magnet (c) a small rainbow (d) snow falling
6. 6.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil attracts magnets (c) oil makes it rain (d) spilled oil is slippery
7. 7.True or false: a toy parachute falls slowly through the air. (a) True (b) False
8. 8.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
9. 9.🔍 Which is the odd one out? (a) honey (b) an ice cube (c) a glass marble (d) a pebble
10. 10.⚖️ 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) False (b) True
11. 11.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of chalk (c) a plastic ruler (d) a piece of foil
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) True (b) False
13. 13.🥄 Which of these dissolves faster? (a) powdered sugar (b) sugar left unstirred (c) a big sugar cube (d) sugar in icy water
14. 14.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
15. 15.🧺 Which of these is needed for the dissolving test? (a) a clock or timer (b) cotton wool (c) a magnet (d) honey
16. 16.True or false: table salt does not dissolve in water. (a) False (b) True
17. 17.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it became air (c) it sank as sand (d) it spread in the water
18. 18.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
19. 19.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a sunny window (c) a sheet of white paper (d) bright sunlight
20. 20.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a rainbow (c) a solution (d) a magnet
21. 21.True or false: a battery cell is needed for the paper helicopter. (a) False (b) True
22. 22.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a strip of paper (c) a magnet (d) a paper clip
23. 23.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is the one thing we change. (a) False (b) True
24. 24.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) True (b) False
25. 25.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a mirror (c) a spoon (d) water with food colour
26. 26.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a sugar cube (d) a glass marble
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) food colour (c) a mirror (d) a magnet
29. 29.⚖️ 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 what we measure. (a) False (b) True
30. 30.🫗 Why does cooking oil float on top of water? (a) oil is sticky (b) oil is hot (c) oil is less dense (d) oil is heavier
31. 31.True or false: a balloon is needed for the float-or-sink test. (a) True (b) False
32. 32.⚖️ 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 glass is what we measure. (a) False (b) True
33. 33.🛟 Where is a safe place to drop the helicopter from? (a) a high window ledge (b) a wobbly chair (c) from your raised hand (d) a roof edge
34. 34.True or false: a strip of cloth does not let water climb. (a) True (b) False
35. 35.💧 Which change is this: drops under a pot lid? (a) freezing (b) melting (c) evaporation (d) condensation
36. 36.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
37. 37.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to splash everyone (c) to win a prize (d) to hide the corks
38. 38.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a glass marble (d) a paper towel
39. 39.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a results table (c) small test objects (d) a tub of water
40. 40.True or false: a steel spoon lets water climb up it. (a) False (b) True

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