Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 649 · 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.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals like colour (d) petals are magnetic
2. 2.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the same three liquids (b) the same glass (c) the order of the layers (d) the order of pouring
3. 3.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) two chairs (c) turmeric powder (d) sticky tape
4. 4.🚁 Which of these falls fast through the air? (a) a toy parachute (b) a feather (c) a paper helicopter (d) a stone
5. 5.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
6. 6.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar left unstirred (c) sugar in warm water (d) sugar stirred well
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the amount of clay (c) the shape of the clay
8. 8.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is what we measure. (a) False (b) True
10. 10.True or false: a sugar cube does not let water climb. (a) False (b) True
11. 11.🔮 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) the sugar turns to salt (d) all of it dissolves
12. 12.⚖️ 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) sun or shade (b) the size of the bowl (c) how many drops form
13. 13.🧺 Which of these is not needed for the density tower? (a) honey (b) a battery cell (c) water with food colour (d) a tall clear glass
14. 14.⚖️ 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 keep it the same (b) we measure it (c) we change it
15. 15.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
16. 16.🍯 Which of these is denser than water? (a) very salty water (b) air (c) an ice cube (d) cooking oil
17. 17.💧 Which of these does not let water climb? (a) a paper towel (b) a plastic ruler (c) a strip of cloth (d) a sugar cube
18. 18.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) time to reach the floor (b) the drop height (c) the length of the blades
19. 19.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
20. 20.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) straight above you (d) behind you
21. 21.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) yeast (c) small test objects (d) a magnet
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we keep it the same (b) we change it (c) we measure it
23. 23.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to keep children safe (c) to win a prize (d) to hide the corks
24. 24.🚁 Dropped from a raised hand, does a glass marble fall slowly or fast? (a) falls fast (b) falls slowly
25. 25.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a balloon (d) a sheet of white paper
26. 26.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
27. 27.True or false: warm water is not needed for the dissolving test. (a) True (b) False
28. 28.True or false: a cork floats on water. (a) True (b) False
29. 29.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it spread in the water (c) it sank as sand (d) it became air
30. 30.True or false: sugar in icy water dissolves slower. (a) False (b) True
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) a few hours of waiting (d) a glass of water
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 kept the same. (a) True (b) False
33. 33.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a mirror (c) a clear glass of water (d) bright sunlight
34. 34.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) spilled oil is slippery (c) oil makes it rain (d) oil turns into honey
35. 35.🧺 Which of these is not needed for the density tower? (a) a spoon (b) a tall clear glass (c) a balloon (d) honey
36. 36.💧 Which of these is evaporation? (a) drops on a cold glass (b) wet clothes drying (c) a pond icing over (d) snow turning to water
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) a balloon
38. 38.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a magnet (b) water (c) sunlight (d) ice cubes
39. 39.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a strip of paper (c) a mirror (d) a ruler
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we change it (b) we keep it the same (c) we measure it

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