Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 263 · 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) a magnetic chess set (b) a drinking straw (c) a vacuum cleaner (d) a suction hook
2. 2.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we measure it (b) we change it (c) we keep it the same
3. 3.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
4. 4.🔍 Which is the odd one out? (a) an iron nail (b) a glass marble (c) a feather (d) a pebble
5. 5.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they stay white (c) they all turn green (d) they fall off at once
6. 6.⚖️ 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 pouring”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) a results table (d) a mirror
8. 8.🧺 Do we need a magnet for the water cycle bowl? (a) needed (b) not needed
9. 9.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it will not break (d) it is magnetic
10. 10.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they mix for ever (c) they become solid (d) they separate again
11. 11.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) True (b) False
12. 12.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the water is coloured (c) water splits the light (d) the paper makes colours
13. 13.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) a paper cutter (c) safety scissors (d) gardening shears
14. 14.🍯 Which of these is denser than water? (a) honey (b) air (c) a cork (d) an ice cube
15. 15.🔍 Which is the odd one out? (a) butter going runny (b) snow turning to water (c) ice becoming water (d) drops on a cold glass
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a battery cell (c) a stiff postcard (d) a glass of water
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a sunny window (d) a balloon
18. 18.True or false: a cotton thread lets water climb up it. (a) False (b) True
19. 19.🧺 Do we need a balloon for the density tower? (a) needed (b) not needed
20. 20.🚀 Which of these goes backward? (a) the rowing boat (b) the balloon (c) gas from the rocket (d) the swimmer
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the room it stands in (c) the length of the stem
22. 22.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is kept the same. (a) False (b) True
23. 23.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
24. 24.True or false: a rubber eraser does not let water climb. (a) False (b) True
25. 25.🚀 Which of these goes backward? (a) the rowing boat (b) the rocket (c) water from the oars (d) the swimmer
26. 26.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a clear glass of water (c) bright sunlight (d) a sunny window
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) yeast (d) a white flower
29. 29.🚀 Which of these goes backward? (a) air from the balloon (b) the rocket (c) the balloon (d) the rowing boat
30. 30.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is what we measure. (a) False (b) True
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) whether it floats (c) the shape of the clay
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is the one thing we change. (a) False (b) True
35. 35.🚀 Which of these goes forward? (a) water a swimmer pushes (b) gas from the rocket (c) the balloon (d) air from the balloon
36. 36.True or false: a mirror is needed for the dissolving test. (a) True (b) False
37. 37.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar in warm water (d) sugar in icy water
38. 38.⚖️ 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) False (b) True
39. 39.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls slowly (b) falls fast
40. 40.🍯 Which of these is denser than water? (a) cooking oil (b) air (c) a coin (d) a cork

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