Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 517 · 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.⚖️ 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 change it (c) we measure it
2. 2.True or false: a battery cell is needed for the density tower. (a) False (b) True
3. 3.🧺 Do we need safety scissors for the paper helicopter? (a) needed (b) not needed
4. 4.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) wipe up spills at once (d) play near a deep pond
5. 5.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it turns to stone (c) it can float (d) it sinks faster
6. 6.True or false: small test objects is needed for the float-or-sink test. (a) True (b) False
7. 7.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a fridge magnet (d) a medicine dropper
8. 8.⚖️ 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 measure it (c) we keep it the same
9. 9.True or false: yeast is needed for the paper helicopter. (a) True (b) False
10. 10.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a mirror (c) yeast (d) a balloon
11. 11.🍯 Is an ice cube denser or less dense than water? (a) less dense than water (b) denser than water
12. 12.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil turns into honey (c) oil attracts magnets (d) spilled oil is slippery
13. 13.💧 Which of these is evaporation? (a) ice becoming water (b) dew on morning grass (c) sweat drying on skin (d) snow turning to water
14. 14.🧺 Do we need turmeric powder for the balloon rocket? (a) needed (b) not needed
15. 15.🍯 Which of these is less dense than water? (a) an ice cube (b) very salty water (c) honey (d) a pebble
16. 16.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) both of them (c) neither of them (d) the big log
17. 17.🧺 Which of these is needed for the density tower? (a) honey (b) yeast (c) a battery cell (d) turmeric powder
18. 18.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it bounces up (c) it dissolves (d) it sinks
19. 19.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it changes colour (c) it gets too heavy (d) it can pop loudly
20. 20.True or false: a strip of paper is not needed for the paper helicopter. (a) False (b) True
21. 21.True or false: a big sugar cube dissolves faster. (a) False (b) True
22. 22.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.True or false: chalk powder dissolves in water. (a) False (b) True
25. 25.True or false: an iron nail sinks in water. (a) True (b) False
26. 26.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) sharp kitchen shears (c) gardening shears (d) safety scissors
27. 27.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
28. 28.🔍 Which is the odd one out? (a) a ping-pong ball (b) cooking oil (c) a cork (d) a pebble
29. 29.🔍 Which is the odd one out? (a) a fluff of cotton (b) a glass marble (c) a feather (d) a paper helicopter
30. 30.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) a balloon (c) cold water (d) warm water
31. 31.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we measure it (b) we keep it the same (c) we change it
32. 32.True or false: a tall clear glass is needed for the density tower. (a) True (b) False
33. 33.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
34. 34.🚁 Which of these falls slowly through the air? (a) a feather (b) a glass marble (c) a coin (d) a stone
35. 35.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
36. 36.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) yeast (c) two chairs (d) vinegar
37. 37.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
38. 38.🧺 Which of these is needed for the water cycle bowl? (a) ice cubes (b) turmeric powder (c) a magnet (d) a balloon
39. 39.🔍 What do you see after pouring honey, water and oil into one glass? (a) one mixed colour (b) the glass gets hot (c) bubbles of gas (d) three separate layers
40. 40.⚖️ 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) the same three liquids (d) how much of each liquid

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