Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 180 · 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 is the odd one out? (a) very salty water (b) cooking oil (c) a cork (d) an ice cube
2. 2.🔍 Which is the odd one out? (a) honey (b) very salty water (c) cooking oil (d) a pebble
3. 3.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a steel spoon (d) a sugar cube
4. 4.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) a strip of paper (d) safety scissors
5. 5.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
6. 6.🧺 Which of these is needed for the water cycle bowl? (a) turmeric powder (b) yeast (c) a big bowl (d) a magnet
7. 7.⚖️ 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 kept the same. (a) True (b) False
8. 8.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls slowly (b) falls fast
9. 9.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a balloon (c) yeast (d) a glass of water
10. 10.🧺 Which of these is not needed for the density tower? (a) honey (b) turmeric powder (c) a spoon (d) water with food colour
11. 11.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it dissolves (c) it can float (d) it turns to stone
12. 12.🥄 Which of these dissolves in water? (a) sand (b) cooking oil (c) sawdust (d) glucose powder
13. 13.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) ice cubes (c) a big bowl (d) a battery cell
14. 14.True or false: yeast is not needed for the paper helicopter. (a) False (b) True
15. 15.💧 Which of these is evaporation? (a) a pond icing over (b) water becoming ice (c) snow turning to water (d) a puddle drying up
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a sink or a bucket (d) turmeric powder
17. 17.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it gets too heavy (c) it changes colour (d) it turns into a kite
18. 18.True or false: a battery cell is needed for the water cycle bowl. (a) True (b) False
19. 19.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
20. 20.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) pour it on the floor (c) taste each layer (d) do not lick the spoon
21. 21.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) evaporation (c) refraction (d) reflection
22. 22.🧺 Which of these is needed for the water cycle bowl? (a) a battery cell (b) water (c) a magnet (d) yeast
23. 23.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) time to reach the floor (b) the paper clip (c) the length of the blades
24. 24.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a results table (c) a towel for spills (d) yeast
25. 25.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a battery cell (c) a stiff postcard (d) a magnet
26. 26.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a tub of water (c) a magnet (d) yeast
27. 27.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to catch any spills (d) to make it rain
28. 28.🧺 Do we need a strip of paper for the paper helicopter? (a) needed (b) not needed
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) time to dissolve (b) the amount of sugar (c) the amount of water (d) the stirring
30. 30.🌈 In VIBGYOR, what number colour is green?
31. 31.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
32. 32.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a balloon (b) water (c) a small cup (d) cling film
33. 33.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is kept the same. (a) False (b) True
34. 34.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a mirror (c) a glass of water (d) a sink or a bucket
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) a magnet
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.True or false: a pencil is needed for the paper helicopter. (a) True (b) False
38. 38.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a battery cell (c) sticky tape (d) a balloon
39. 39.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the same three liquids (b) the order of the layers (c) the order of pouring
40. 40.🧺 Which of these is needed for the water cycle bowl? (a) turmeric powder (b) a balloon (c) cling film (d) a battery cell

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