Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 63 · 40 questions

What you do (Bounce, bounce, see): 1. An adult cuts a window near the top on one side of the carton and near the bottom on the other. 2. Tape one mirror at 45° behind each window, the two mirrors facing each other. 3. Look into the bottom window and adjust the mirrors until the view is clear. 4. Peep over a table or wall — never point it at the Sun.

1. 1.True or false: black cloth reflects light poorly. (a) True (b) False
2. 2.🔭 Which of these reflects light well? (a) a dull brick (b) aluminium foil (c) a rough wooden board (d) black cloth
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) how clear the view is (c) the angle of the mirrors
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) a ruler (d) yeast
5. 5.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) nothing at all (d) only short walls
6. 6.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) dark soil (d) a shiny steel plate
7. 7.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it can float (d) so it looks shiny
8. 8.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) upside down only (c) much bigger (d) in colour
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
10. 10.True or false: sticky tape is not needed for the periscope. (a) True (b) False
11. 11.True or false: a magnet is needed for the periscope. (a) False (b) True
12. 12.True or false: a mirror reflects light well. (a) True (b) False
13. 13.True or false: vinegar is not needed for the periscope. (a) False (b) True
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same carton (c) the same light (d) the angle of the mirrors
16. 16.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) dark soil (d) black cloth
17. 17.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) an empty juice carton (d) yeast
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.🔭 How many mirrors does a simple periscope use?
20. 20.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) aluminium foil (d) a rough wooden board
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) two small mirrors (d) a balloon
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) the angle of the mirrors (c) how clear the view is
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) an empty juice carton (d) two small mirrors
26. 26.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
27. 27.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a pencil (d) a magnet
29. 29.🔭 Which of these reflects light poorly? (a) a dull brick (b) a shiny steel plate (c) still clear water (d) a mirror
30. 30.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
31. 31.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) a mirror (d) a rough wooden board
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) sticky tape (d) vinegar
33. 33.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) sticky tape (c) a ruler (d) a pencil
34. 34.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a pencil (d) turmeric powder
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
36. 36.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
37. 37.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) evaporation (d) magnetism
39. 39.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False

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