Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 609 · 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.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a balloon (c) a spoon (d) water with food colour
2. 2.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they fall off at once (d) they stay white
3. 3.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a suction hook (d) a magnetic chess set
4. 4.💧 Which of these is freezing? (a) snow turning to water (b) a puddle drying up (c) water becoming ice (d) sweat drying on skin
5. 5.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of water (b) the kind of sugar (c) the water temperature (d) time to dissolve
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) brightness of rainbow (b) the same white paper (c) the same glass (d) the amount of water
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) turmeric powder (c) yeast (d) a magnet
9. 9.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the person dropping (b) time to reach the floor (c) the kind of paper (d) the length of the blades
10. 10.True or false: yeast is needed for the paper helicopter. (a) False (b) True
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.True or false: water is not needed for the water cycle bowl. (a) False (b) True
13. 13.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is kept the same. (a) False (b) True
14. 14.True or false: a tall clear glass is needed for the density tower. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) a cotton thread (b) a glass marble (c) a plastic ruler (d) a rubber eraser
16. 16.🔍 Which is the odd one out? (a) a piece of chalk (b) a strip of cloth (c) a flower stem (d) a plastic ruler
17. 17.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a balloon (c) a battery cell (d) sticky tape
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) True (b) False
19. 19.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
20. 20.🛟 Which of these sinks in water? (a) an ice-cream stick (b) a cork (c) a ball of clay (d) a piece of thermocol
21. 21.🚀 Which of these goes backward? (a) the rowing boat (b) the rocket (c) the swimmer (d) water a swimmer pushes
22. 22.🧺 Do we need a ruler for the paper helicopter? (a) not needed (b) needed
23. 23.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) balloons (d) magnets
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a mirror (c) a sunny window (d) a sheet of white paper
25. 25.🧺 Do we need a magnet for the water cycle bowl? (a) needed (b) not needed
26. 26.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls slowly (b) falls fast
27. 27.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
28. 28.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red
29. 29.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) a big bowl (c) a battery cell (d) a magnet
30. 30.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a magnet (c) a tub of water (d) a towel for spills
31. 31.⚖️ 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
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is what we measure. (a) False (b) True
33. 33.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it goes much farther (c) it flies off the string (d) it turns into a kite
34. 34.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is the one thing we change. (a) True (b) False
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) a clear glass of water (d) yeast
37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the water temperature (c) the stirring
38. 38.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) on a bed (d) over a sink or bucket
39. 39.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a mirror (c) a towel for spills (d) a results table
40. 40.🔍 Which is the odd one out? (a) wet clothes drying (b) sweat drying on skin (c) a puddle drying up (d) snow turning to water

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