Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 582 · 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 colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the amount of colour (b) the room it stands in (c) the length of the stem (d) time for colour to show
2. 2.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a pencil (c) a balloon (d) safety scissors
3. 3.🌈 In VIBGYOR, what number colour is red?
4. 4.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the water layer (c) in the oil layer (d) at the very bottom
5. 5.🚁 Which of these falls fast through the air? (a) an open sheet of paper (b) a coin (c) a feather (d) a paper helicopter
6. 6.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a mirror (b) water (c) cling film (d) ice cubes
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) the kind of clay (c) the tub of water (d) whether it floats
8. 8.True or false: a flower stem lets water climb up it. (a) False (b) True
9. 9.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.🚀 Which of these goes backward? (a) the balloon (b) the rowing boat (c) the swimmer (d) air from the balloon
11. 11.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the kind of clay (b) whether it floats (c) the shape of the clay
12. 12.True or false: turmeric powder is not needed for the balloon rocket. (a) True (b) False
13. 13.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
14. 14.🔍 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
15. 15.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
16. 16.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a battery cell (c) a mirror (d) a results table
17. 17.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
18. 18.🚁 Which of these falls fast through the air? (a) a paper helicopter (b) a feather (c) a toy parachute (d) a steel spoon
19. 19.True or false: a paper clip is needed for the paper helicopter. (a) True (b) False
20. 20.⚖️ 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
21. 21.🧺 Which of these is needed for the dissolving test? (a) warm water (b) a balloon (c) a mirror (d) honey
22. 22.True or false: yeast is not needed for the balloon rocket. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) a ball of clay (b) a glass marble (c) an ice cube (d) a metal key
24. 24.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) more friction, less far (c) no change at all (d) less friction
25. 25.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) yeast (b) a spoon (c) water with food colour (d) honey
26. 26.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water can scald (c) hot water is magnetic (d) hot water is heavy
27. 27.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) both of them (c) the small pebble (d) the big log
28. 28.🌈 In VIBGYOR, what number colour is yellow?
29. 29.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
30. 30.🥄 Which of these dissolves faster? (a) powdered sugar (b) a big sugar cube (c) sugar in icy water (d) sugar left unstirred
31. 31.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to splash everyone (c) to win a prize (d) to keep children safe
32. 32.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals lose water to air (d) petals like colour
33. 33.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
34. 34.🧺 Which of these is needed for the density tower? (a) a battery cell (b) a balloon (c) yeast (d) honey
35. 35.🧺 Do we need water with food colour for the density tower? (a) needed (b) not needed
36. 36.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) look at it through glass (d) never look at the Sun
37. 37.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
38. 38.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is kept the same. (a) True (b) False
39. 39.🌈 How many colours do we name in a rainbow (VIBGYOR)?
40. 40.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we change it (b) we measure it (c) we keep it the same

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