Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 94 · 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 of these is needed for the balloon rocket? (a) a battery cell (b) a balloon (c) a magnet (d) a mirror
2. 2.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) stare at the Sun (d) look at it through glass
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) yeast (d) a towel
4. 4.⚖️ 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) the order of pouring (b) the order of the layers (c) how much of each liquid (d) the same three liquids
5. 5.🔍 What do you see after pouring honey, water and oil into one glass? (a) one mixed colour (b) the glass gets hot (c) three separate layers (d) bubbles of gas
6. 6.True or false: a feather sinks in water. (a) False (b) True
7. 7.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
8. 8.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
9. 9.True or false: turmeric powder is needed for the density tower. (a) False (b) True
10. 10.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) False (b) True
11. 11.True or false: a plastic ruler lets water climb up it. (a) True (b) False
12. 12.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
13. 13.🧺 Which of these is needed for the density tower? (a) a balloon (b) a spoon (c) a battery cell (d) turmeric powder
14. 14.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) safety scissors (c) gardening shears (d) sharp kitchen shears
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) bright sunlight (d) a battery cell
16. 16.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
17. 17.⚖️ 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 order of the layers”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🫗 Why does cooking oil float on top of water? (a) oil is hot (b) oil is heavier (c) oil is sticky (d) oil is less dense
19. 19.🧺 Do we need warm water for the dissolving test? (a) needed (b) not needed
20. 20.True or false: a teaspoon is not needed for the dissolving test. (a) True (b) False
21. 21.True or false: sugar does not dissolve in water. (a) True (b) False
22. 22.⚖️ 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
23. 23.True or false: a coin is less dense than water. (a) True (b) False
24. 24.🛟 Which of these sinks in water? (a) a feather (b) an ice-cream stick (c) a ball of clay (d) an ice cube
25. 25.🔍 Which is the odd one out? (a) a glass marble (b) a stone (c) a paper helicopter (d) a crumpled paper ball
26. 26.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
27. 27.True or false: a coin sinks in water. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a piece of chalk (d) a piece of foil
29. 29.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is kept the same. (a) True (b) False
30. 30.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we measure it (b) we keep it the same (c) we change it
32. 32.⚖️ 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 kept the same. (a) True (b) False
33. 33.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.True or false: a drinking straw works by magnetism. (a) False (b) True
35. 35.🧺 Do we need a balloon for the density tower? (a) needed (b) not needed
36. 36.True or false: an ice cube is less dense than water. (a) False (b) True
37. 37.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “time to reach the floor”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.True or false: a glass marble is denser than water. (a) True (b) False
39. 39.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward

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