Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 538 · 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.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
2. 2.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) cold water (c) two clear glasses (d) cotton wool
3. 3.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) how many drops form (b) the time we wait (c) the cling film cover (d) sun or shade
4. 4.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a fridge magnet (c) a sundial (d) a balloon rocket
5. 5.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is the one thing we change. (a) False (b) True
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a mirror (c) food colour (d) a glass of water
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
8. 8.True or false: wet clothes drying is melting. (a) True (b) False
9. 9.💧 In the covered bowl, where does the water vapour come from? (a) the cling film (b) the air outside (c) the bowl itself (d) water warmed by the Sun
10. 10.🧺 Do we need honey for the density tower? (a) not needed (b) needed
11. 11.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
12. 12.⚖️ 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 change it (c) we measure it
13. 13.True or false: the balloon goes forward. (a) True (b) False
14. 14.🌈 How many colours do we name in a rainbow (VIBGYOR)?
15. 15.🧺 Do we need a mirror for the density tower? (a) needed (b) not needed
16. 16.🍯 Which of these is denser than water? (a) cooking oil (b) honey (c) a cork (d) a ping-pong ball
17. 17.🔍 Which is the odd one out? (a) making ice lollies (b) ice becoming water (c) water becoming ice (d) a pond icing over
18. 18.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls slowly (b) falls fast
19. 19.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) a paper cutter (c) sharp kitchen shears (d) gardening shears
20. 20.⚖️ 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 three liquids is kept the same. (a) False (b) True
21. 21.True or false: drops on a cold glass is condensation. (a) True (b) False
22. 22.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to salt (b) it turns to drops (c) it turns to smoke (d) it disappears
23. 23.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) turmeric powder (b) a towel for spills (c) small test objects (d) a results table
24. 24.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) True (b) False
25. 25.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) air inside pushes back (d) water is hiding there
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a white flower (c) food colour (d) a glass of water
27. 27.💧 Which of these is evaporation? (a) wet hair drying (b) making ice lollies (c) ice becoming water (d) butter going runny
28. 28.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.🔍 Which is the odd one out? (a) a plastic ruler (b) a strip of cloth (c) a piece of foil (d) a glass marble
30. 30.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) turmeric powder (b) a strip of paper (c) a ruler (d) safety scissors
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a sunny window (c) bright sunlight (d) a sheet of white paper
32. 32.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is kept the same. (a) True (b) False
34. 34.🚁 Which of these falls slowly through the air? (a) a paper helicopter (b) a glass marble (c) a crumpled paper ball (d) a coin
35. 35.🔍 Which is the odd one out? (a) a cork (b) a coin (c) a glass marble (d) honey
36. 36.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a long string (c) sticky tape (d) a mirror
37. 37.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a balloon (d) a white flower
39. 39.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
40. 40.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) wipe up spills at once (d) play near a deep pond

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