Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 267 · 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.🔭 How many mirrors does a simple periscope use?
2. 2.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) reflection (c) refraction (d) evaporation
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
5. 5.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) to make it heavy (d) so it looks shiny
6. 6.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 45 degrees (d) 90 degrees
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) sticky tape (d) a magnet
8. 8.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) only darkness (d) two pictures
9. 9.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
10. 10.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
11. 11.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) nothing at all (d) taller walls
12. 12.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
13. 13.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see over a wall (d) see germs
14. 14.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) yeast (d) a ruler
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 angle of the mirrors (c) the same carton (d) how clear the view is
17. 17.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a pencil (c) vinegar (d) a balloon
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a balloon (c) a ruler (d) sticky tape
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
20. 20.True or false: vinegar is needed for the periscope. (a) True (b) False
21. 21.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.True or false: a dull brick reflects light well. (a) True (b) False
24. 24.True or false: two small mirrors is needed for the periscope. (a) False (b) True
25. 25.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) big wall mirrors (d) broken glass bits
26. 26.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) two small mirrors (d) vinegar
27. 27.True or false: dark soil reflects light well. (a) True (b) False
28. 28.⚖️ 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
29. 29.🔭 How many times does light bounce off a mirror in a simple periscope?
30. 30.True or false: aluminium foil reflects light well. (a) True (b) False
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we keep it the same (b) we change it (c) we measure it
32. 32.True or false: sticky tape is needed for the periscope. (a) False (b) True
33. 33.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) an empty juice carton (d) yeast
34. 34.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) upside down only (d) flipped left to right
35. 35.🔭 Which of these reflects light well? (a) still clear water (b) black cloth (c) dark soil (d) a rough wooden board
36. 36.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
37. 37.True or false: a rough wooden board reflects light poorly. (a) False (b) True
38. 38.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) turmeric powder (d) sticky tape
40. 40.⚖️ 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

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