Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 184 · 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.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) yeast (c) sticky tape (d) a pencil
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
6. 6.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) black cloth (d) aluminium foil
9. 9.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) magnetism (d) refraction
10. 10.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) turmeric powder (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 object we look at”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🔭 Which of these reflects light well? (a) a mirror (b) a dull brick (c) black cloth (d) a rough wooden board
13. 13.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
15. 15.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) two small mirrors (d) turmeric powder
16. 16.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
17. 17.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) a mirror (d) a dull brick
18. 18.True or false: still clear water reflects light well. (a) False (b) True
19. 19.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
20. 20.⚖️ 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
21. 21.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a magnet (c) two small mirrors (d) sticky tape
23. 23.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view
24. 24.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
25. 25.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a farmer (d) a pilot in a plane
26. 26.True or false: a magnet is not needed for the periscope. (a) False (b) True
27. 27.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) dark soil (d) aluminium foil
28. 28.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a friend’s toy (d) a tree
29. 29.⚖️ 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
30. 30.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) still clear water (d) a dull brick
31. 31.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) vinegar (d) sticky tape
32. 32.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
33. 33.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a dull brick (d) still clear water
34. 34.⚖️ 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 keep it the same (c) we change it
35. 35.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) a battery cell (d) a pencil
36. 36.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
37. 37.🔭 Which of these reflects light well? (a) aluminium foil (b) black cloth (c) a rough wooden board (d) a dull brick
38. 38.True or false: a battery cell is needed for the periscope. (a) False (b) True
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) True (b) False
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) an empty juice carton (c) a ruler (d) two small mirrors

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