Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 35 · 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.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) lick your fingers (d) rub your eyes
2. 2.📘 What pulls the paper helicopter down to the floor? (a) the wind (b) magnetism (c) air pressure (d) gravity
3. 3.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it sinks (c) it dissolves (d) it turns white
4. 4.True or false: an empty capped bottle floats on water. (a) True (b) False
5. 5.💧 Which change is this: snow turning to water? (a) evaporation (b) freezing (c) condensation (d) melting
6. 6.🍯 Which of these is less dense than water? (a) a pebble (b) a glass marble (c) a coin (d) cooking oil
7. 7.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) cotton wool (c) a balloon (d) a clock or timer
8. 8.True or false: small pebbles does not dissolve in water. (a) False (b) True
9. 9.True or false: a mirror is needed for the dissolving test. (a) True (b) False
10. 10.🌈 How many colours do we name in a rainbow (VIBGYOR)?
11. 11.🔮 Predict: you add two more paper clips. How does it fall? (a) it floats up (b) faster (c) it stops in the air (d) slower
12. 12.💧 Which of these is melting? (a) a puddle drying up (b) butter going runny (c) dew on morning grass (d) water becoming ice
13. 13.True or false: an ice-cream stick floats on water. (a) True (b) False
14. 14.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) gardening shears (c) sharp kitchen shears (d) a paper cutter
15. 15.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a balloon (c) sticky tape (d) vinegar
16. 16.True or false: turmeric powder is not needed for the balloon rocket. (a) True (b) False
17. 17.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) whether the card stays (b) how full the glass is (c) the same card
18. 18.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) two clear glasses (c) a balloon (d) sugar
19. 19.True or false: yeast is needed for the balloon rocket. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) making ice lollies (b) drops on a cold glass (c) a pond icing over (d) water becoming ice
21. 21.True or false: a sugar cube lets water climb up it. (a) True (b) False
22. 22.True or false: ice becoming water is evaporation. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) sugar (b) table salt (c) sawdust (d) food colour
24. 24.True or false: a rubber eraser does not let water climb. (a) False (b) True
25. 25.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls slowly (b) falls fast
26. 26.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) vinegar (c) a drinking straw (d) a long string
27. 27.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) a high window ledge (c) a wobbly chair (d) from your raised hand
28. 28.🚁 Dropped from a raised hand, does a toy parachute fall slowly or fast? (a) falls fast (b) falls slowly
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is the one thing we change. (a) False (b) True
30. 30.True or false: a dry leaf sinks in water. (a) True (b) False
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the time of day (c) the amount of water
32. 32.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) air pushes it up (d) the straw is hot
33. 33.📘 What is the push of air on a falling thing called? (a) magnetism (b) dissolving (c) floating (d) air resistance
34. 34.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the drop height (b) the length of the blades (c) the person dropping (d) time to reach the floor
35. 35.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) ice cubes (c) yeast (d) cling film
36. 36.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a results table (c) a towel for spills (d) a magnet
37. 37.🚁 What does the paper helicopter do as it falls? (a) it turns into a ball (b) it spins round (c) it stays still in air (d) it flies upward
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of sugar (b) the stirring (c) time to dissolve (d) the amount of water
39. 39.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it turns to plastic (d) it sinks at once
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the amount of sugar (b) the water temperature (c) time to dissolve

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