Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 314 · 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? Which of these is what we measure? (a) the paper clip (b) the length of the blades (c) time to reach the floor (d) the drop height
2. 2.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) water (d) air
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a glass of water (d) turmeric powder
4. 4.True or false: a balloon is needed for the density tower. (a) True (b) False
5. 5.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
6. 6.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: how many drops form is what we measure. (a) False (b) True
7. 7.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a tub of water (c) a balloon (d) a towel for spills
8. 8.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
9. 9.True or false: a balloon is not needed for the density tower. (a) False (b) True
10. 10.📘 What is the push of air on a falling thing called? (a) dissolving (b) magnetism (c) air resistance (d) floating
11. 11.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) how many drops form (b) the time we wait (c) sun or shade
12. 12.🧺 Which of these is needed for the density tower? (a) yeast (b) a balloon (c) water with food colour (d) a mirror
13. 13.🔍 Which is the odd one out? (a) a pebble (b) air (c) a coin (d) honey
14. 14.True or false: yeast is needed for the float-or-sink test. (a) True (b) False
15. 15.📘 Air presses on everything around us. What is this push called? (a) friction (b) air pressure (c) sunlight (d) magnetism
16. 16.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
17. 17.True or false: a crumpled paper ball falls fast through the air. (a) False (b) True
18. 18.💧 Which of these is melting? (a) making ice lollies (b) a puddle drying up (c) water becoming ice (d) ice becoming water
19. 19.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) wipe up spills at once (c) run around the tub (d) leave water on the floor
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) how full the glass is (b) the same glass (c) whether the card stays (d) the same card
21. 21.True or false: a pebble is denser than water. (a) False (b) True
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is kept the same. (a) False (b) True
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) True (b) False
24. 24.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) throw the glass (c) pour it on the floor (d) do not lick the spoon
25. 25.True or false: a coin is denser than water. (a) False (b) True
26. 26.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we change it (b) we measure it (c) we keep it the same
27. 27.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they mix for ever (b) they turn to honey (c) they separate again (d) they become solid
28. 28.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) throw them away safely (c) chew them (d) give them to a baby
29. 29.⚖️ 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 same three liquids”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
31. 31.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it sinks (c) it still floats (d) it turns white
32. 32.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
33. 33.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) a clear glass of water (d) yeast
34. 34.True or false: a drinking straw is needed for the balloon rocket. (a) True (b) False
35. 35.True or false: glucose powder does not dissolve in water. (a) False (b) True
36. 36.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) it stays still (c) straight down (d) forward
37. 37.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
38. 38.💧 Which change is this: butter going runny? (a) evaporation (b) melting (c) freezing (d) condensation
39. 39.🧺 Which of these is needed for the balloon rocket? (a) a balloon (b) turmeric powder (c) a magnet (d) a mirror
40. 40.🧺 Do we need a spoon for the density tower? (a) not needed (b) needed

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