Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 181 · 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 bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
2. 2.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
3. 3.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) near a plug point (d) over a sink or bucket
4. 4.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is the one thing we change. (a) False (b) True
5. 5.🧺 Do we need a big bowl for the water cycle bowl? (a) not needed (b) needed
6. 6.🧺 Which of these is needed for the density tower? (a) honey (b) a mirror (c) a balloon (d) a battery cell
7. 7.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil turns into honey (c) oil attracts magnets (d) oil makes it rain
8. 8.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it sank as sand (c) it vanished for ever (d) it spread in the water
9. 9.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) glue on the card (d) the cold water
10. 10.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it goes much farther (c) it flies off the string (d) it turns into a kite
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🛟 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
13. 13.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is the one thing we change. (a) False (b) True
14. 14.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
15. 15.🛟 Does a pebble float or sink in water? (a) floats (b) sinks
16. 16.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
17. 17.🧺 Do we need safety scissors for the paper helicopter? (a) not needed (b) needed
18. 18.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) wipe up spills at once (c) run around the tub (d) play near a deep pond
19. 19.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar stirred well (c) powdered sugar (d) a big sugar cube
20. 20.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a mirror (b) a paper clip (c) a strip of paper (d) a ruler
21. 21.🧺 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 magnet (c) a towel (d) a glass of water
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) yeast (d) small test objects
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is what we measure. (a) False (b) True
24. 24.True or false: a spoon is needed for the density tower. (a) False (b) True
25. 25.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) turmeric powder (c) yeast (d) a tub of water
26. 26.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the water layer (c) in the oil layer (d) at the very bottom
27. 27.⚖️ 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 order of pouring (d) the same glass
28. 28.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) yeast (c) a mirror (d) a magnet
29. 29.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) anyone, without looking (d) a grown-up
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) how big we blow it (b) the same string (c) distance it travels (d) the same tape
31. 31.True or false: a glass marble falls slowly through the air. (a) True (b) False
32. 32.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) powdered sugar (c) neither of them (d) both the same
33. 33.🌈 In VIBGYOR, what number colour is green?
34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
36. 36.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a pencil (c) a ruler (d) a magnet
37. 37.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a magnetic chess set (d) a suction hook
38. 38.🔮 Predict: you add two more paper clips. How does it fall? (a) it floats up (b) it stops in the air (c) slower (d) faster
39. 39.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we keep it the same (c) we measure it

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids