Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 645 · 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.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) a mirror (d) aluminium foil
2. 2.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
3. 3.📘 Light bouncing off a mirror is called ___. (a) refraction (b) magnetism (c) reflection (d) evaporation
4. 4.⚖️ 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 light (c) how clear the view is (d) the object we look at
5. 5.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
6. 6.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) a rough wooden board (d) still clear water
7. 7.True or false: two small mirrors is needed for the periscope. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) black cloth (d) a rough wooden board
9. 9.True or false: a balloon is needed for the periscope. (a) False (b) True
10. 10.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a magnet (c) a pencil (d) an empty juice carton
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) a magnet (d) sticky tape
14. 14.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 180 degrees (d) 90 degrees
15. 15.True or false: a rough wooden board reflects light poorly. (a) True (b) False
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the same mirrors (c) how clear the view is (d) the object we look at
17. 17.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) black cloth (d) a mirror
18. 18.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) a shiny steel plate (d) aluminium foil
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) two small mirrors (d) a balloon
20. 20.⚖️ 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 measure it (c) we change it
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) an empty juice carton (c) a pencil (d) two small mirrors
22. 22.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
23. 23.🔭 Which of these reflects light well? (a) a dull brick (b) aluminium foil (c) a rough wooden board (d) dark soil
24. 24.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
26. 26.🔭 How many mirrors does a simple periscope use?
27. 27.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.True or false: a dull brick reflects light poorly. (a) False (b) True
29. 29.True or false: black cloth reflects light well. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) dark soil (d) still clear water
31. 31.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
32. 32.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) only short walls (d) the ground
33. 33.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
34. 34.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
35. 35.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
37. 37.🔭 How many times does light bounce off a mirror in a simple periscope?
38. 38.True or false: a ruler is not needed for the periscope. (a) False (b) True
39. 39.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
40. 40.True or false: a dull brick reflects light well. (a) False (b) True

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