Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 991 · 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 — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🔍 Which is the odd one out? (a) a pebble (b) a coin (c) cooking oil (d) honey
3. 3.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) turmeric powder (b) a results table (c) a tub of water (d) a towel for spills
4. 4.🧺 Do we need a mirror for the density tower? (a) not needed (b) needed
5. 5.🧺 Which of these is not needed for the water cycle bowl? (a) cling film (b) yeast (c) water (d) a small cup
6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar stirred well (c) sugar in warm water (d) a big sugar cube
8. 8.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of pouring (b) the order of the layers (c) the same glass
9. 9.🧺 Do we need safety scissors for the paper helicopter? (a) needed (b) not needed
10. 10.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) a few hours of waiting (d) a white flower
11. 11.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) safety scissors (c) sharp kitchen shears (d) gardening shears
12. 12.True or false: a paper clip is not needed for the paper helicopter. (a) True (b) False
13. 13.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a mirror (c) sugar (d) cotton wool
14. 14.🛟 Which of these sinks in water? (a) a dry leaf (b) an ice cube (c) a feather (d) an iron nail
15. 15.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a mirror (c) a strip of paper (d) a pencil
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.💧 Why do water drops form on the outside of a glass of ice water? (a) ice escapes the glass (b) the glass sweats (c) vapour in air cools (d) the glass leaks
18. 18.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is kept the same. (a) False (b) True
19. 19.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
20. 20.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it flies off the string (c) it goes much farther (d) it goes less far
21. 21.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) sawdust (d) food colour
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a balloon (c) yeast (d) a white flower
23. 23.🧺 Do we need a magnet for the float-or-sink test? (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: the order of pouring is the one thing we change. (a) False (b) True
25. 25.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
26. 26.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) wipe up spills at once (d) leave water on the floor
27. 27.🍯 Is a pebble denser or less dense than water? (a) denser than water (b) less dense than water
28. 28.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) lick your fingers (d) wash your hands
29. 29.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
32. 32.⚖️ 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 water (b) the kind of flower (c) the room it stands in (d) the length of the stem
33. 33.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) on top of the oil (b) under the honey (c) in the water layer (d) in the honey layer
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the shape of the clay (b) the amount of clay (c) the kind of clay (d) whether it floats
36. 36.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.🥄 Which of these does not dissolve in water? (a) sugar (b) sand (c) baking soda (d) table salt
39. 39.📘 What is water vapour? (a) tiny ice cubes (b) water as a gas (c) a kind of smoke (d) salty water
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the water temperature (c) the amount of water

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