Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 504 · 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 the density tower experiment safe? (a) pour it on the floor (b) taste each layer (c) do not lick the spoon (d) throw the glass
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) yeast (c) a white flower (d) a glass of water
3. 3.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
4. 4.📘 What is water vapour? (a) salty water (b) water as a gas (c) tiny ice cubes (d) a kind of smoke
5. 5.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to salt (b) it turns to smoke (c) it disappears (d) it turns to drops
6. 6.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) wipe up spills at once (d) play near a deep pond
7. 7.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) stare at the Sun (d) look at it through glass
8. 8.🔍 Which is the odd one out? (a) a metal key (b) a coin (c) an iron nail (d) a feather
9. 9.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a spoon (c) a balloon (d) a tall clear glass
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the time of day (b) the same white paper (c) the amount of water (d) the same window
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) food colour (d) a magnet
12. 12.🧺 Which of these is needed for the paper helicopter? (a) a balloon (b) a battery cell (c) a magnet (d) a pencil
13. 13.🛟 Which of these sinks in water? (a) a cork (b) a ball of clay (c) a feather (d) a ping-pong ball
14. 14.🔍 What do you see after pouring honey, water and oil into one glass? (a) bubbles of gas (b) one mixed colour (c) the glass gets hot (d) three separate layers
15. 15.🧺 Do we need a battery cell for the water cycle bowl? (a) needed (b) not needed
16. 16.⚖️ 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
17. 17.🔍 Which is the odd one out? (a) a pebble (b) an ice cube (c) honey (d) very salty water
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the amount of clay (b) the tub of water (c) the shape of the clay (d) whether it floats
19. 19.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) near a plug point (d) on a bed
20. 20.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
21. 21.🥄 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) cooking oil (d) sugar
22. 22.True or false: turmeric powder is needed for the water cycle bowl. (a) True (b) False
23. 23.True or false: a plastic ruler does not let water climb. (a) False (b) True
24. 24.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a mirror (c) a balloon (d) two chairs
25. 25.🔍 Which is the odd one out? (a) a cork (b) cooking oil (c) a pebble (d) a ping-pong ball
26. 26.🔍 Which is the odd one out? (a) a coin (b) a ping-pong ball (c) air (d) an ice cube
27. 27.💧 Which of these does not let water climb? (a) a piece of chalk (b) a flower stem (c) a rubber eraser (d) a sugar cube
28. 28.📘 What does “dense” mean? (a) very colourful (b) heavy for its size (c) very hot (d) very thin
29. 29.🔍 Which is the odd one out? (a) table salt (b) baking soda (c) sugar (d) sand
30. 30.⚖️ 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 the one thing we change. (a) True (b) False
31. 31.⚖️ 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
32. 32.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) the bottle is magnetic (d) water is hiding there
33. 33.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) two clear glasses (c) warm water (d) a comb
34. 34.🚀 Which of these goes forward? (a) the swimmer (b) water a swimmer pushes (c) gas from the rocket (d) air from the balloon
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we measure it (c) we change it
36. 36.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
37. 37.True or false: a pencil is needed for the paper helicopter. (a) False (b) True
38. 38.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
39. 39.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
40. 40.🧺 Which of these is not needed for the water cycle bowl? (a) water (b) cling film (c) ice cubes (d) a magnet

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