Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 234 · 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 big sugar cube dissolve faster or slower? (a) slower (b) faster
2. 2.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same glass (b) the same window (c) brightness of rainbow (d) the amount of water
3. 3.🧺 Which of these is needed for the density tower? (a) yeast (b) a battery cell (c) a mirror (d) a tall clear glass
4. 4.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) through tiny stem tubes (d) it is sprayed on
5. 5.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
6. 6.💧 In the covered bowl, where does the water vapour come from? (a) water warmed by the Sun (b) the bowl itself (c) the air outside (d) the cling film
7. 7.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to weigh down the bottom (b) to stop the spinning (c) to make it fall slower (d) to make it magnetic
8. 8.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) a big bowl (c) a magnet (d) cling film
9. 9.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a balloon (b) water with food colour (c) honey (d) cooking oil
10. 10.🔍 Which is the odd one out? (a) making ice lollies (b) water becoming ice (c) wet hair drying (d) a pond icing over
11. 11.💧 Which of these is evaporation? (a) snow turning to water (b) a misty bathroom mirror (c) making ice lollies (d) wet clothes drying
12. 12.⚖️ 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 what we measure. (a) True (b) False
13. 13.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) a big bowl (c) a magnet (d) turmeric powder
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the shape of the clay (b) the amount of clay (c) the kind of clay (d) whether it floats
15. 15.🧺 Which of these is not needed for the float-or-sink test? (a) turmeric powder (b) a tub of water (c) small test objects (d) a results table
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a sunny window (c) a clear glass of water (d) a sheet of white paper
17. 17.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) warm water (c) sugar (d) honey
18. 18.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same glass (b) the order of pouring (c) the same three liquids (d) the order of the layers
19. 19.💧 Which change is this: butter going runny? (a) condensation (b) freezing (c) evaporation (d) melting
20. 20.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) spilled oil is slippery (c) oil makes it rain (d) oil turns into honey
21. 21.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) both of them (c) the big log (d) neither of them
22. 22.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
23. 23.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a tub of water (d) a mirror
24. 24.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) water is heavier (c) it looks nicer (d) the card gets wet
25. 25.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a piece of foil (c) a plastic ruler (d) a steel spoon
26. 26.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.🔍 Which is the odd one out? (a) a cork (b) an iron nail (c) a steel spoon (d) a pebble
28. 28.🛟 Does an ice cube float or sink in water? (a) floats (b) sinks
29. 29.True or false: wet clothes drying is evaporation. (a) False (b) True
30. 30.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) fewer drops form (b) the water turns red (c) the bowl freezes (d) more drops form
31. 31.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) True (b) False
32. 32.🧺 Which of these is not needed for the water cycle bowl? (a) a balloon (b) water (c) sunlight (d) a big bowl
33. 33.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.🧺 Which of these is needed for the density tower? (a) yeast (b) a mirror (c) water with food colour (d) turmeric powder
35. 35.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) never look at the Sun (d) look at it in a mirror
36. 36.🧺 Which of these is not needed for the paper helicopter? (a) a strip of paper (b) a battery cell (c) a paper clip (d) a ruler
37. 37.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
38. 38.⚖️ 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) sun or shade (b) the amount of water (c) the size of the bowl (d) how many drops form
39. 39.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it turns white (c) it dissolves (d) it still floats
40. 40.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it became air (c) it sank as sand (d) it spread in the water

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