Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 785 · 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 needed for the water cycle bowl? (a) yeast (b) a mirror (c) a small cup (d) a balloon
2. 2.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we change it (b) we keep it the same (c) we measure it
3. 3.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) colour climbs up it (d) nothing ever happens
4. 4.🧺 Do we need a magnet for the density tower? (a) needed (b) not needed
5. 5.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls slowly (b) falls fast
6. 6.🎈 When does the balloon rocket stop? (a) it never stops (b) when it turns blue (c) when the air runs out (d) when it gets cold
7. 7.True or false: a big bowl is not needed for the water cycle bowl. (a) True (b) False
8. 8.🔮 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 less far (d) it goes much farther
9. 9.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) sun or shade (b) the time we wait (c) how many drops form (d) the cling film cover
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) a white flower (d) food colour
11. 11.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) aim it at your friend (c) put string round a neck (d) keep it away from faces
12. 12.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) yeast (b) water with food colour (c) honey (d) a spoon
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the kind of flower (b) time for colour to show (c) the length of the stem (d) the amount of water
14. 14.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls fast (b) falls slowly
15. 15.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) sticky tape (c) yeast (d) two chairs
18. 18.True or false: a pond icing over is freezing. (a) False (b) True
19. 19.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) chew them (c) give them to a baby (d) throw them away safely
20. 20.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
21. 21.True or false: sugar in warm water dissolves slower. (a) False (b) True
22. 22.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it goes backward first (c) it travels less far (d) it speeds up
23. 23.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) look at it through glass (d) never look at the Sun
24. 24.🧺 Do we need a balloon for the density tower? (a) not needed (b) needed
25. 25.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is kept the same. (a) True (b) False
26. 26.True or false: a battery cell is not needed for the water cycle bowl. (a) True (b) False
27. 27.🚁 Which of these falls fast through the air? (a) an open sheet of paper (b) a paper helicopter (c) a glass marble (d) a fluff of cotton
28. 28.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
29. 29.🔍 Which is the odd one out? (a) a bicycle pump (b) a compass needle (c) a medicine dropper (d) a suction hook
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) a mirror (d) food colour
31. 31.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
32. 32.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.True or false: cooking oil is denser than water. (a) False (b) True
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) False (b) True
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) True (b) False
37. 37.⚖️ 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 measure it (b) we change it (c) we keep it the same
38. 38.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) how much of each liquid (b) the order of the layers (c) the same glass (d) the same three liquids
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.True or false: ice becoming water is melting. (a) True (b) False

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