Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 949 · 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 of these is not needed for the density tower? (a) a tall clear glass (b) honey (c) a battery cell (d) a spoon
2. 2.🔍 Which is the odd one out? (a) a piece of thermocol (b) a coin (c) a steel spoon (d) a pebble
3. 3.🔍 Which is the odd one out? (a) a pebble (b) honey (c) a coin (d) a ping-pong ball
4. 4.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
5. 5.🧺 Do we need a magnet for the density tower? (a) not needed (b) needed
6. 6.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
7. 7.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) stare at the Sun (d) never look at the Sun
8. 8.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the kind of paper (b) time to reach the floor (c) the drop height (d) the length of the blades
9. 9.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is what we measure. (a) True (b) False
10. 10.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) yeast (c) a strip of paper (d) safety scissors
11. 11.True or false: a drinking straw works by magnetism. (a) True (b) False
12. 12.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a ruler (c) a magnet (d) a paper clip
13. 13.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) False (b) True
14. 14.🍯 Which of these is denser than water? (a) cooking oil (b) an ice cube (c) a coin (d) air
15. 15.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
16. 16.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it turns to plastic (d) it sinks at once
17. 17.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a magnet (d) food colour
19. 19.🔍 Which is the odd one out? (a) a fluff of cotton (b) a steel spoon (c) a paper helicopter (d) a toy parachute
20. 20.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
21. 21.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to grow plants (d) to cool the glass
22. 22.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they become solid (c) they mix for ever (d) they separate again
23. 23.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of the layers”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) yeast (c) a white flower (d) a glass of water
25. 25.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
26. 26.🍯 Is a ping-pong ball denser or less dense than water? (a) denser than water (b) less dense than water
27. 27.💧 Which change is this: snow turning to water? (a) freezing (b) evaporation (c) melting (d) condensation
28. 28.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it floats higher (c) it sinks (d) it melts
29. 29.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a sheet of white paper (d) a magnet
30. 30.True or false: yeast is needed for the water rainbow. (a) True (b) False
31. 31.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
32. 32.🧺 Which of these is needed for the density tower? (a) yeast (b) a mirror (c) turmeric powder (d) honey
33. 33.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
34. 34.🚀 Which of these goes forward? (a) gas from the rocket (b) water a swimmer pushes (c) the rocket (d) water from the oars
35. 35.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
36. 36.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
38. 38.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
39. 39.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
40. 40.💧 Which of these is melting? (a) drops under a pot lid (b) wet clothes drying (c) ice becoming water (d) making ice lollies

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