Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 919 · 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.🌈 In VIBGYOR, what number colour is violet?
2. 2.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
3. 3.⚖️ 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
4. 4.⚖️ 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 what we measure. (a) True (b) False
5. 5.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls fast (b) falls slowly
6. 6.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is the one thing we change. (a) False (b) True
7. 7.🥄 Which of these dissolves in water? (a) sand (b) food colour (c) small pebbles (d) cooking oil
8. 8.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
9. 9.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) violet (c) red (d) orange
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a stiff postcard (d) a towel
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) turmeric powder (c) a glass of water (d) a few hours of waiting
12. 12.🔍 Which is the odd one out? (a) a pebble (b) a ball of clay (c) an iron nail (d) an ice-cream stick
13. 13.True or false: sugar in icy water dissolves faster. (a) False (b) True
14. 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of water (b) the amount of sugar (c) time to dissolve (d) the water temperature
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 keep it the same (b) we measure it (c) we change it
16. 16.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) turmeric powder (c) a long string (d) two chairs
17. 17.💧 Which of these does not let water climb? (a) a flower stem (b) a cotton thread (c) a paper towel (d) a glass marble
18. 18.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) on top of the oil (c) in the honey layer (d) under the honey
19. 19.True or false: a magnet is needed for the balloon rocket. (a) True (b) False
20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) True (b) False
21. 21.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a rubber eraser (d) a cotton thread
22. 22.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it flies off the string (c) it turns into a kite (d) it goes less far
23. 23.⚖️ 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
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) yeast
25. 25.🚁 Dropped from a raised hand, does a coin fall slowly or fast? (a) falls slowly (b) falls fast
26. 26.🧺 Which of these is needed for the density tower? (a) a battery cell (b) honey (c) turmeric powder (d) a magnet
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a battery cell (c) a sunny window (d) a sheet of white paper
28. 28.⚖️ 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) the paper clip
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the amount of clay (b) the shape of the clay (c) whether it floats (d) the kind of clay
30. 30.🔍 Which is the odd one out? (a) a steel spoon (b) a cork (c) an ice-cream stick (d) an empty capped bottle
31. 31.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
32. 32.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a magnet (c) sugar (d) a teaspoon
33. 33.True or false: sugar stirred well dissolves faster. (a) True (b) False
34. 34.⚖️ 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 “how much of each liquid”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.🧺 Do we need ice cubes for the water cycle bowl? (a) not needed (b) needed
36. 36.🧺 Do we need cooking oil for the density tower? (a) not needed (b) needed
37. 37.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they become solid (c) they separate again (d) they mix for ever
38. 38.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we keep it the same (c) we change it
40. 40.True or false: an open sheet of paper falls slowly through the air. (a) True (b) False

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