Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 446 · 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: yeast is not needed for the water rainbow. (a) False (b) True
2. 2.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
3. 3.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.🚀 Which of these goes forward? (a) the balloon (b) gas from the rocket (c) water a swimmer pushes (d) air from the balloon
5. 5.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
6. 6.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.🌈 How many colours do we name in a rainbow (VIBGYOR)?
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a glass of water (d) a white flower
9. 9.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the same white paper (c) the same window (d) the same glass
10. 10.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) lightning (b) wind (c) rain (d) sunshine
11. 11.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it turns blue (c) so it gets hot (d) so it does not fall
12. 12.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a sugar cube (d) a steel spoon
13. 13.True or false: a ball of clay floats on water. (a) True (b) False
14. 14.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
15. 15.True or false: cold water is needed for the dissolving test. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) a feather (b) a coin (c) a steel spoon (d) a ball of clay
17. 17.🔍 Which is the odd one out? (a) an ice cube (b) a piece of thermocol (c) an iron nail (d) a dry leaf
18. 18.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
19. 19.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a battery cell (c) a paper clip (d) a strip of paper
20. 20.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a teaspoon (c) honey (d) warm water
21. 21.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it in a mirror (d) look at it through glass
22. 22.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it floats higher (c) it turns blue (d) it sinks
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) False (b) True
24. 24.🧺 Which of these is needed for the density tower? (a) a balloon (b) yeast (c) a tall clear glass (d) a battery cell
25. 25.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a compass needle (d) a suction hook
26. 26.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it vanished for ever (c) it sank as sand (d) it spread in the water
27. 27.True or false: yeast is needed for the water cycle bowl. (a) True (b) False
28. 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the tub of water (b) the shape of the clay (c) whether it floats (d) the amount of clay
29. 29.🧺 Which of these is needed for the paper helicopter? (a) a mirror (b) yeast (c) a strip of paper (d) a balloon
30. 30.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to smoke (b) it turns to salt (c) it turns to drops (d) it disappears
31. 31.True or false: safety scissors is needed for the paper helicopter. (a) True (b) False
32. 32.📘 What pulls the paper helicopter down to the floor? (a) air pressure (b) the wind (c) gravity (d) magnetism
33. 33.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a tub of water (c) turmeric powder (d) a magnet
34. 34.🧺 Do we need a magnet for the density tower? (a) needed (b) not needed
35. 35.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
36. 36.🎈 When does the balloon rocket stop? (a) when it turns blue (b) it never stops (c) when it gets cold (d) when the air runs out
37. 37.True or false: a glass marble is less dense than water. (a) True (b) False
38. 38.🌈 In VIBGYOR, what number colour is indigo?
39. 39.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a drinking straw (c) a medicine dropper (d) a vacuum cleaner
40. 40.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a magnet (d) a sheet of white paper

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