Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 572 · 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 sugar cube (b) a plastic ruler (c) a cotton thread (d) a paper towel
2. 2.⚖️ 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 tape (c) the same straw (d) distance it travels
3. 3.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
4. 4.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) evaporation (d) melting
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) False (b) True
6. 6.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they become solid (c) they separate again (d) they mix for ever
7. 7.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
8. 8.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is kept the same. (a) True (b) False
9. 9.🌈 In VIBGYOR, what number colour is yellow?
10. 10.True or false: sugar does not dissolve in water. (a) False (b) True
11. 11.🌈 How many colours do we name in a rainbow (VIBGYOR)?
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
13. 13.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) sticky tape (c) vinegar (d) a mirror
14. 14.🔍 Which is the odd one out? (a) a metal key (b) an empty capped bottle (c) a feather (d) a cork
15. 15.🔍 Which is the odd one out? (a) air (b) a pebble (c) honey (d) very salty water
16. 16.🥛 Which of these works by magnetism? (a) a suction hook (b) a magnetic pin holder (c) a vacuum cleaner (d) a bicycle pump
17. 17.🔍 What do you see after pouring honey, water and oil into one glass? (a) bubbles of gas (b) the glass gets hot (c) one mixed colour (d) three separate layers
18. 18.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
19. 19.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
20. 20.💧 Which change is this: wet clothes drying? (a) condensation (b) melting (c) freezing (d) evaporation
21. 21.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar stirred well (c) sugar in icy water (d) a big sugar cube
22. 22.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
23. 23.True or false: a stone falls slowly through the air. (a) False (b) True
24. 24.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.⚖️ 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 keep it the same (b) we change it (c) we measure it
26. 26.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) warm water (c) two clear glasses (d) a mirror
27. 27.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
28. 28.True or false: a drinking straw works by air pressure. (a) False (b) True
29. 29.🍯 Is a ping-pong ball denser or less dense than water? (a) less dense than water (b) denser than water
30. 30.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
31. 31.🧺 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 sheet of white paper (d) a mirror
32. 32.True or false: a mirror is not needed for the dissolving test. (a) True (b) False
33. 33.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
34. 34.🧺 Which of these is not needed for the balloon rocket? (a) a battery cell (b) sticky tape (c) a drinking straw (d) a balloon
35. 35.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
36. 36.True or false: gas from the rocket goes forward. (a) False (b) True
37. 37.🚁 Dropped from a raised hand, does a glass marble fall slowly or fast? (a) falls slowly (b) falls fast
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the amount of clay (c) the shape of the clay
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.🛟 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

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