Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 62 · 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.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
2. 2.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it goes backward first (c) it speeds up (d) it travels less far
3. 3.🌈 In VIBGYOR, what number colour is red?
4. 4.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of chalk (c) a piece of foil (d) a plastic ruler
5. 5.💧 Which of these lets water climb up it? (a) a piece of foil (b) a cotton thread (c) a plastic ruler (d) a glass marble
6. 6.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the big log (c) neither of them (d) the small pebble
7. 7.🥄 Which of these dissolves faster? (a) sugar in icy water (b) a big sugar cube (c) sugar left unstirred (d) powdered sugar
8. 8.True or false: a mirror is not needed for the density tower. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) dew on morning grass (b) drops under a pot lid (c) a misty bathroom mirror (d) wet hair drying
10. 10.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a flower stem (d) a glass marble
11. 11.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) turmeric powder (c) a magnet (d) small test objects
12. 12.🧺 Which of these is not needed for the density tower? (a) a spoon (b) a tall clear glass (c) cooking oil (d) a mirror
13. 13.🧺 Which of these is needed for the paper helicopter? (a) a pencil (b) a mirror (c) a battery cell (d) a magnet
14. 14.⚖️ 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
15. 15.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a plastic ruler (d) a cotton thread
16. 16.🧺 Do we need a spoon for the density tower? (a) needed (b) not needed
17. 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.True or false: vinegar is needed for the balloon rocket. (a) False (b) True
19. 19.⚖️ 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 three liquids is what we measure. (a) True (b) False
20. 20.🧺 Which of these is needed for the float-or-sink test? (a) a tub of water (b) a mirror (c) a magnet (d) turmeric powder
21. 21.🔍 Which is the odd one out? (a) a paper helicopter (b) a toy parachute (c) a glass marble (d) a fluff of cotton
22. 22.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) less friction (c) it goes faster (d) no change at all
23. 23.🧺 Do we need sunlight for the water cycle bowl? (a) not needed (b) needed
24. 24.⚖️ 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 window (b) the amount of water (c) the same glass (d) brightness of rainbow
25. 25.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) smell it closely (d) look for leftover grains
26. 26.🛟 Which of these floats on water? (a) a glass marble (b) a coin (c) a cork (d) a steel spoon
27. 27.🥄 Which of these dissolves in water? (a) sand (b) sawdust (c) small pebbles (d) glucose powder
28. 28.True or false: a feather falls slowly through the air. (a) False (b) True
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same three liquids”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
32. 32.True or false: cooking oil is less dense than water. (a) False (b) True
33. 33.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
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 keep it the same (b) we measure it (c) we change it
35. 35.💧 Which change is this: water becoming ice? (a) evaporation (b) freezing (c) melting (d) condensation
36. 36.🧺 Do we need ice cubes for the water cycle bowl? (a) not needed (b) needed
37. 37.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) never look at the Sun (d) stare at the Sun
38. 38.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
40. 40.🧺 Do we need turmeric powder for the paper helicopter? (a) needed (b) not needed

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