Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 886 · 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 of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a suction hook (d) a magnetic pin holder
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a magnet (c) a balloon (d) a mirror
3. 3.🔍 Which is the odd one out? (a) a bicycle pump (b) a compass needle (c) a magnetic chess set (d) a magnetic pin holder
4. 4.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a battery cell (b) water (c) sunlight (d) ice cubes
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) False (b) True
6. 6.True or false: a battery cell is needed for the balloon rocket. (a) True (b) False
7. 7.🥄 Why does sugar dissolve faster in warm water? (a) particles move faster (b) warm water is thicker (c) sugar likes the dark (d) cold water is wet
8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
9. 9.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) sunshine (b) lightning (c) rain (d) wind
10. 10.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) a results table (c) small test objects (d) a towel for spills
11. 11.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) faster (c) slower (d) the same
12. 12.🧺 Do we need honey for the density tower? (a) needed (b) not needed
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a magnet (c) a mirror (d) a glass of water
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
15. 15.💧 Which of these is evaporation? (a) water becoming ice (b) butter going runny (c) snow turning to water (d) wet hair drying
16. 16.🍯 Which of these is less dense than water? (a) a pebble (b) a coin (c) honey (d) cooking oil
17. 17.⚖️ 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 kind of paper (c) the length of the blades (d) time to reach the floor
18. 18.True or false: sand does not dissolve in water. (a) False (b) True
19. 19.⚖️ 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 three liquids”? (a) we change it (b) we measure it (c) we keep it the same
20. 20.💧 Which of these does not let water climb? (a) a flower stem (b) a sugar cube (c) a cotton thread (d) a steel spoon
21. 21.🍯 Is honey denser or less dense than water? (a) less dense than water (b) denser than water
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a glass of water (c) a battery cell (d) a stiff postcard
23. 23.🔍 Which is the odd one out? (a) a paper helicopter (b) an open sheet of paper (c) a steel spoon (d) a feather
24. 24.🧺 Which of these is needed for the density tower? (a) yeast (b) a magnet (c) honey (d) a battery cell
25. 25.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is kept the same. (a) True (b) False
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a glass of water (d) yeast
27. 27.True or false: drops on a cold glass is evaporation. (a) True (b) False
28. 28.🌈 In VIBGYOR, what number colour is yellow?
29. 29.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a strip of cloth (d) a piece of foil
30. 30.🔮 Predict: you fold the two blades the other way. What changes? (a) it turns blue (b) it falls upward (c) it does not fall (d) it spins the other way
31. 31.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a balloon (d) a clear glass of water
32. 32.🍯 Which of these is denser than water? (a) a glass marble (b) cooking oil (c) a cork (d) an ice cube
33. 33.🍯 Why does honey sink to the bottom of the glass? (a) it is the densest (b) it is yellow (c) it is the stickiest (d) it is the coldest
34. 34.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the amount of clay (b) the kind of clay (c) the shape of the clay (d) whether it floats
35. 35.🧺 Which of these is needed for the dissolving test? (a) warm water (b) cotton wool (c) a balloon (d) a magnet
36. 36.🧺 Which of these is not needed for the float-or-sink test? (a) turmeric powder (b) a tub of water (c) a results table (d) small test objects
37. 37.🔍 Which is the odd one out? (a) a puddle drying up (b) wet hair drying (c) wet clothes drying (d) ice becoming water
38. 38.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) a magnet (c) water with food colour (d) cooking oil
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.🧺 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) a mirror

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