Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 646 · 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.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to ice (b) some water evaporates (c) it turns to salt (d) the water increases
2. 2.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) a mirror (d) a sunny window
3. 3.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) through tiny stem tubes (d) it rains on them
4. 4.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
5. 5.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
7. 7.🥄 Which of these does not dissolve in water? (a) sugar (b) small pebbles (c) baking soda (d) glucose powder
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is the one thing we change. (a) False (b) True
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a glass of water (c) a stiff postcard (d) yeast
10. 10.🚁 Which of these falls slowly through the air? (a) a coin (b) a toy parachute (c) a crumpled paper ball (d) a stone
11. 11.⚖️ 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) the amount of water (b) how many drops form (c) the cling film cover (d) sun or shade
12. 12.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it sinks faster (c) it dissolves (d) it turns to stone
13. 13.🛟 Which of these floats on water? (a) a pebble (b) a glass marble (c) a coin (d) a feather
14. 14.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
15. 15.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) a big sugar cube (d) sugar in warm water
16. 16.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) a balloon (c) water (d) cling film
17. 17.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) two clear glasses (c) sugar (d) a balloon
18. 18.⚖️ 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 amount of water (c) how many drops form (d) the time we wait
19. 19.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a strip of paper (c) a paper clip (d) a battery cell
20. 20.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
21. 21.💧 Which of these does not let water climb? (a) a sugar cube (b) a cotton thread (c) a piece of foil (d) a paper towel
22. 22.🚀 Which of these goes backward? (a) the rocket (b) the balloon (c) water from the oars (d) the rowing boat
23. 23.True or false: a mirror is not needed for the float-or-sink test. (a) False (b) True
24. 24.💧 Which change is this: water becoming ice? (a) condensation (b) freezing (c) melting (d) evaporation
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a balloon (d) a few hours of waiting
26. 26.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
28. 28.⚖️ 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 glass is what we measure. (a) False (b) True
29. 29.🚀 Which of these goes forward? (a) gas from the rocket (b) air from the balloon (c) the balloon (d) water from the oars
30. 30.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a battery cell (b) a small cup (c) a big bowl (d) water
31. 31.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) refraction (c) evaporation (d) reflection
32. 32.🧺 Do we need a ruler for the paper helicopter? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a balloon (d) a white flower
34. 34.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) sunshine (b) wind (c) rain (d) lightning
35. 35.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a balloon (b) water with food colour (c) a tall clear glass (d) cooking oil
36. 36.True or false: a puddle drying up is evaporation. (a) False (b) True
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) turmeric powder (d) a towel
38. 38.🌈 In VIBGYOR, what number colour is indigo?
39. 39.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) taste it (c) look for leftover grains (d) smell it closely
40. 40.🧺 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) turmeric powder

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