Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 402 · 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 bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) the slope of the string (c) the same string (d) distance it travels
2. 2.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) its hollow shape (c) it has a magnet (d) steel is very light
3. 3.🧺 Do we need ice cubes for the water cycle bowl? (a) not needed (b) needed
4. 4.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) throw the glass (c) pour it on the floor (d) taste each layer
5. 5.🚁 Dropped from a raised hand, does a coin fall slowly or fast? (a) falls slowly (b) falls fast
6. 6.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) the stem is hot (d) petals are magnetic
7. 7.True or false: sugar is not needed for the dissolving test. (a) True (b) False
8. 8.🛟 Which of these sinks in water? (a) a cork (b) a glass marble (c) a dry leaf (d) an ice-cream stick
9. 9.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the same three liquids (b) the order of the layers (c) the order of pouring
10. 10.🌈 In VIBGYOR, what number colour is indigo?
11. 11.🍯 Which of these is denser than water? (a) a glass marble (b) an ice cube (c) a cork (d) cooking oil
12. 12.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) a coin (b) a crumpled paper ball (c) a fluff of cotton (d) a glass marble
14. 14.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is hotter (d) it is magnetic
15. 15.🔍 Which is the odd one out? (a) a feather (b) a cork (c) an empty capped bottle (d) a steel spoon
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is kept the same. (a) True (b) False
17. 17.⚖️ 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 keep it the same (b) we measure it (c) we change it
18. 18.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) slower (c) not at all (d) faster
19. 19.💧 Which change is this: wet clothes drying? (a) freezing (b) condensation (c) evaporation (d) melting
20. 20.💧 Why do water drops form on the outside of a glass of ice water? (a) the glass leaks (b) ice escapes the glass (c) vapour in air cools (d) the glass sweats
21. 21.🔍 Which is the odd one out? (a) sweat drying on skin (b) wet clothes drying (c) ice becoming water (d) a puddle drying up
22. 22.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) wipe up spills at once (d) play near a deep pond
23. 23.True or false: a battery cell is not needed for the density tower. (a) True (b) False
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) a mirror
25. 25.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) turmeric powder (c) a magnet (d) a results table
26. 26.⚖️ 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
27. 27.True or false: water from the oars goes backward. (a) True (b) False
28. 28.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) put string round a neck (c) keep it away from faces (d) blow it till it bursts
29. 29.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes much farther (c) it goes less far (d) it turns into a kite
30. 30.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) some stays undissolved (b) all of it dissolves (c) the sugar turns to salt (d) the water turns solid
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) turmeric powder (d) a battery cell
32. 32.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the length of the blades (b) time to reach the floor (c) the person dropping (d) the paper clip
34. 34.🥄 Which of these dissolves in water? (a) chalk powder (b) cooking oil (c) food colour (d) small pebbles
35. 35.True or false: a mirror is needed for the dissolving test. (a) True (b) False
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) True (b) False
37. 37.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a mirror (c) a balloon (d) sticky tape
38. 38.⚖️ 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
39. 39.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the person dropping (b) time to reach the floor (c) the length of the blades
40. 40.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a tub of water (d) a balloon

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