Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 953 · 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.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) so light reaches the eye (d) to make it heavy
2. 2.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) two small mirrors (d) turmeric powder
3. 3.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
4. 4.True or false: a pencil is not needed for the periscope. (a) False (b) True
5. 5.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
6. 6.🔭 Which of these reflects light well? (a) black cloth (b) a mirror (c) a rough wooden board (d) a dull brick
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
8. 8.🔭 How many times does light bounce off a mirror in a simple periscope?
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
11. 11.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a baker (d) a submarine crew
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same mirrors (c) the object we look at (d) the same carton
13. 13.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) two small mirrors (d) turmeric powder
14. 14.True or false: a dull brick reflects light well. (a) True (b) False
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a magnet (c) a pencil (d) a ruler
16. 16.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
17. 17.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) dark soil (d) black cloth
18. 18.🔭 Which of these reflects light well? (a) still clear water (b) dark soil (c) a rough wooden board (d) black cloth
19. 19.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
20. 20.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) vinegar (d) an empty juice carton
21. 21.⚖️ 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
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
23. 23.🔭 How many mirrors does a simple periscope use?
24. 24.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
25. 25.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
26. 26.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) aluminium foil (d) dark soil
27. 27.True or false: a balloon is not needed for the periscope. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) a dull brick
29. 29.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 45 degrees (d) 10 degrees
30. 30.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
31. 31.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) upside down only (c) in colour (d) much bigger
32. 32.⚖️ 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
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the same carton (c) how clear the view is (d) the object we look at
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a battery cell (d) a ruler
35. 35.True or false: two small mirrors is needed for the periscope. (a) False (b) True
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
38. 38.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a shiny steel plate (d) dark soil
39. 39.📘 Light bouncing off a mirror is called ___. (a) refraction (b) magnetism (c) evaporation (d) reflection
40. 40.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) two pictures (d) a brighter view

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