Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 882 · 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) still clear water (b) a dull brick (c) a rough wooden board (d) black cloth
2. 2.🔭 How many times does light bounce off a mirror in a simple periscope?
3. 3.⚖️ 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
4. 4.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) refraction (d) reflection
5. 5.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) an empty juice carton (d) turmeric powder
7. 7.🔭 How many mirrors does a simple periscope use?
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 keep it the same (b) we change it (c) we measure it
9. 9.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
10. 10.🔭 Which of these reflects light poorly? (a) still clear water (b) dark soil (c) a shiny steel plate (d) aluminium foil
11. 11.True or false: a rough wooden board reflects light well. (a) False (b) True
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
14. 14.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
15. 15.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) aluminium foil (d) a shiny steel plate
17. 17.⚖️ 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 angle of the mirrors (c) the same mirrors (d) the same carton
18. 18.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) two small mirrors (d) a balloon
19. 19.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) a shiny steel plate (d) black cloth
20. 20.🔍 Which is the odd one out? (a) a shiny steel plate (b) dark soil (c) still clear water (d) a mirror
21. 21.True or false: still clear water reflects light well. (a) False (b) True
22. 22.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
23. 23.🔭 Which of these reflects light poorly? (a) black cloth (b) aluminium foil (c) a mirror (d) still clear water
24. 24.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) still clear water (d) a mirror
25. 25.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
26. 26.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) flipped left to right (d) upside down only
27. 27.🔭 Which of these reflects light well? (a) still clear water (b) dark soil (c) a dull brick (d) a rough wooden board
28. 28.True or false: vinegar is not needed for the periscope. (a) False (b) True
29. 29.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) how clear the view is (c) the same mirrors (d) the angle of the mirrors
31. 31.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
32. 32.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
33. 33.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a dull brick (c) black cloth (d) dark soil
34. 34.⚖️ 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 change it (b) we keep it the same (c) we measure it
35. 35.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) plastic safety mirrors (d) loose glass panes
37. 37.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a tree (d) a wall
38. 38.True or false: a dull brick reflects light well. (a) True (b) False
39. 39.True or false: a pencil is not needed for the periscope. (a) True (b) False
40. 40.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly

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