Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 896 · 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 colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
3. 3.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward
4. 4.💧 Which of these does not let water climb? (a) a flower stem (b) a strip of cloth (c) a piece of chalk (d) a rubber eraser
5. 5.True or false: a tall clear glass is not needed for the density tower. (a) False (b) True
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is what we measure. (a) True (b) False
7. 7.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) never look at the Sun (d) look at it in a mirror
8. 8.🛟 Which of these floats on water? (a) a steel spoon (b) a glass marble (c) a piece of thermocol (d) a metal key
9. 9.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) a tub of water (d) a magnet
10. 10.💧 Which of these is evaporation? (a) snow turning to water (b) making ice lollies (c) wet clothes drying (d) water becoming ice
11. 11.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
12. 12.True or false: a steel spoon falls slowly through the air. (a) True (b) False
13. 13.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
14. 14.True or false: sawdust dissolves in water. (a) True (b) False
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a towel (c) a sink or a bucket (d) a stiff postcard
16. 16.⚖️ 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 same glass”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) safety scissors (c) sharp kitchen shears (d) gardening shears
18. 18.True or false: the rocket goes backward. (a) True (b) False
19. 19.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) True (b) False
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a balloon (c) a clear glass of water (d) bright sunlight
21. 21.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the person dropping (b) the drop height (c) the length of the blades (d) the kind of paper
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) a results table (d) yeast
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) how big we blow it (c) the same tape
24. 24.⚖️ 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 three liquids is the one thing we change. (a) False (b) True
25. 25.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the tub of water (b) whether it floats (c) the shape of the clay (d) the kind of clay
27. 27.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the order of pouring (b) the same three liquids (c) the same glass (d) how much of each liquid
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a magnet
29. 29.True or false: a mirror is needed for the dissolving test. (a) True (b) False
30. 30.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) hot water is heavy (c) hot water is magnetic (d) it changes colour
31. 31.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) the stem is hot (d) petals are magnetic
32. 32.True or false: a suction hook works by magnetism. (a) True (b) False
33. 33.🔍 What do you see after pouring honey, water and oil into one glass? (a) three separate layers (b) bubbles of gas (c) the glass gets hot (d) one mixed colour
34. 34.🔍 Which is the odd one out? (a) an ice cube (b) an empty capped bottle (c) a feather (d) a coin
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a glass of water (d) turmeric powder
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) yeast (d) a sink or a bucket
37. 37.🚁 Which of these falls fast through the air? (a) a stone (b) a paper helicopter (c) an open sheet of paper (d) a feather
38. 38.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it sank as sand (c) it became air (d) it spread in the water
39. 39.True or false: sunlight is needed for the water cycle bowl. (a) True (b) False
40. 40.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) violet (c) blue (d) red

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