Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 419 · 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.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it through glass (d) look at it in a mirror
2. 2.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) lots of salt stirred in (c) more plain water (d) a little shaking
3. 3.🧺 Which of these is needed for the paper helicopter? (a) turmeric powder (b) a battery cell (c) a magnet (d) a pencil
4. 4.🔍 Which layer is on top in the honey-water-oil tower? (a) honey (b) the spoon (c) cooking oil (d) coloured water
5. 5.☀️ What is white sunlight really made of? (a) tiny drops of water (b) only yellow light (c) tiny bits of dust (d) many colours mixed
6. 6.🧺 Do we need a spoon for the density tower? (a) needed (b) not needed
7. 7.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a suction hook (d) a magnetic pin holder
8. 8.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
9. 9.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) honey (c) a spoon (d) a battery cell
10. 10.True or false: a cork sinks in water. (a) True (b) False
11. 11.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) snow falling (d) a shadow of ice
12. 12.🌈 In VIBGYOR, what number colour is blue?
13. 13.🧺 Which of these is needed for the water cycle bowl? (a) yeast (b) a big bowl (c) a mirror (d) a magnet
14. 14.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) the rainbow fades (d) it turns all red
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) a magnet (d) bright sunlight
16. 16.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
17. 17.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a balloon (c) a tub of water (d) a results table
18. 18.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) a sunny window (d) a balloon
19. 19.⚖️ 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) how many drops form (c) the size of the bowl
20. 20.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a compass needle (d) a bicycle pump
21. 21.💧 Which of these does not let water climb? (a) a steel spoon (b) a strip of cloth (c) a paper towel (d) a sugar cube
22. 22.🌈 How many colours do we name in a rainbow (VIBGYOR)?
23. 23.🧺 Do we need a mirror for the water cycle bowl? (a) not needed (b) needed
24. 24.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is the one thing we change. (a) True (b) False
25. 25.🧺 Which of these is needed for the paper helicopter? (a) a ruler (b) yeast (c) a mirror (d) a battery cell
26. 26.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) small test objects (c) a towel for spills (d) a tub of water
27. 27.🔍 Which is the odd one out? (a) a ping-pong ball (b) a feather (c) a pebble (d) a piece of thermocol
28. 28.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
29. 29.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic pin holder (c) a fridge magnet (d) a magnetic chess set
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) the time of day (c) brightness of rainbow
31. 31.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
32. 32.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the time we wait (b) how many drops form (c) the size of the bowl (d) sun or shade
33. 33.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
34. 34.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
35. 35.True or false: a magnet is needed for the water rainbow. (a) False (b) True
36. 36.🎈 Why does the balloon rocket move along the string? (a) escaping air pushes it (b) a magnet pulls it (c) the straw is heavy (d) the string pulls it
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) a cork (b) an ice cube (c) a piece of thermocol (d) an iron nail
39. 39.💧 In the covered bowl, where does the water vapour come from? (a) the cling film (b) water warmed by the Sun (c) the air outside (d) the bowl itself
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a magnet (d) a white flower

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