Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 621 · 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 well. (a) True (b) False
2. 2.True or false: a mirror reflects light poorly. (a) False (b) True
3. 3.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 10 degrees (d) 90 degrees
4. 4.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) the ground (d) only short walls
5. 5.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a balloon (d) sticky tape
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) an empty juice carton (c) a ruler (d) a pencil
8. 8.⚖️ 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 change it (b) we keep it the same (c) we measure it
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 change it (b) we keep it the same (c) we measure it
10. 10.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) refraction (d) magnetism
12. 12.🔭 Which of these reflects light well? (a) dark soil (b) a shiny steel plate (c) a dull brick (d) a rough wooden board
13. 13.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) a mirror (d) aluminium foil
14. 14.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
15. 15.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a rainbow (d) a brighter view
16. 16.🔭 How many mirrors does a simple periscope use?
17. 17.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) an empty juice carton (c) a pencil (d) two small mirrors
19. 19.True or false: a battery cell is needed for the periscope. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) a rough wooden board (d) dark soil
21. 21.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) to make it heavy (d) so it can float
22. 22.🔭 Which of these reflects light well? (a) dark soil (b) a mirror (c) a dull brick (d) a rough wooden board
23. 23.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
24. 24.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a balloon (c) a ruler (d) two small mirrors
25. 25.True or false: a rough wooden board reflects light poorly. (a) True (b) False
26. 26.⚖️ 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) True (b) False
27. 27.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same mirrors (b) the same carton (c) the same light (d) the angle of the mirrors
29. 29.🧺 Which of these is not needed for the periscope? (a) yeast (b) a ruler (c) an empty juice carton (d) sticky tape
30. 30.🔭 How many times does light bounce off a mirror in a simple periscope?
31. 31.🛟 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
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a magnet (d) a pencil
33. 33.🧺 Which of these is needed for the periscope? (a) a magnet (b) a battery cell (c) an empty juice carton (d) turmeric powder
34. 34.True or false: still clear water reflects light well. (a) False (b) True
35. 35.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
36. 36.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
37. 37.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a battery cell (c) a ruler (d) sticky tape
38. 38.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
40. 40.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a pencil (c) a magnet (d) vinegar

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