Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 944 · 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 paper helicopter. Which one is NOT needed? (a) a ruler (b) a strip of paper (c) a paper clip (d) a mirror
2. 2.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a balloon (b) a tub of water (c) a results table (d) small test objects
3. 3.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) neither of them (c) the big log (d) both of them
4. 4.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a suction hook
5. 5.🛟 Which of these sinks in water? (a) an ice-cream stick (b) a ping-pong ball (c) a piece of thermocol (d) a coin
6. 6.🌈 In VIBGYOR, what number colour is indigo?
7. 7.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) True (b) False
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) yeast (d) bright sunlight
9. 9.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
10. 10.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is what we measure. (a) True (b) False
11. 11.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
12. 12.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a battery cell (b) small test objects (c) a towel for spills (d) a tub of water
13. 13.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals like colour (d) petals lose water to air
14. 14.🛟 How should you check if the sugar has dissolved? (a) taste it (b) smell it closely (c) poke it with a finger (d) look for leftover grains
15. 15.⚖️ 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 change it (b) we measure it (c) we keep it the same
16. 16.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a plastic ruler (d) a cotton thread
17. 17.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
18. 18.🚁 Which of these falls fast through the air? (a) an open sheet of paper (b) a fluff of cotton (c) a crumpled paper ball (d) a paper helicopter
19. 19.💧 Which of these is freezing? (a) wet clothes drying (b) drops on a cold glass (c) water becoming ice (d) a puddle drying up
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the paper clip (b) time to reach the floor (c) the length of the blades
22. 22.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
23. 23.🔮 Predict: you fold the two blades the other way. What changes? (a) it turns blue (b) it falls upward (c) it spins the other way (d) it does not fall
24. 24.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same tape (b) how big we blow it (c) distance it travels (d) the slope of the string
25. 25.True or false: a cotton thread does not let water climb. (a) False (b) True
26. 26.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) turmeric powder (c) yeast (d) small test objects
30. 30.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True
31. 31.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a long string (c) a mirror (d) a balloon
32. 32.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a magnet (d) a shadow of ice
33. 33.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.⚖️ 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) the amount of water (b) the same glass (c) the time of day (d) the same window
35. 35.True or false: air from the balloon goes forward. (a) True (b) False
36. 36.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) wipe up spills at once (d) leave water on the floor
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) the kind of clay (c) the amount of clay (d) whether it floats
38. 38.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is what we measure. (a) True (b) False
39. 39.⚖️ 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 glass (b) the order of the layers (c) the order of pouring
40. 40.True or false: a balloon is needed for the density tower. (a) False (b) True

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