Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 786 · 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.⚖️ 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 measure it (b) we keep it the same (c) we change it
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so it looks shiny (d) so light reaches the eye
5. 5.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) reflection (c) refraction (d) evaporation
6. 6.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) only short walls (d) the ground
7. 7.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) a battery cell (d) a pencil
8. 8.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) plastic safety mirrors (d) broken glass bits
9. 9.True or false: a shiny steel plate reflects light well. (a) True (b) False
10. 10.True or false: a mirror reflects light poorly. (a) True (b) False
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
13. 13.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
14. 14.True or false: dark soil reflects light poorly. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a rough wooden board (d) aluminium foil
16. 16.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
17. 17.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) flipped left to right (d) in colour
18. 18.⚖️ 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 measure it (b) we keep it the same (c) we change it
19. 19.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
20. 20.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
21. 21.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
22. 22.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
23. 23.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
25. 25.🧺 Which of these is needed for the periscope? (a) yeast (b) a balloon (c) a magnet (d) sticky tape
26. 26.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall
27. 27.True or false: black cloth 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 carton”? (a) we measure it (b) we change it (c) we keep it the same
29. 29.True or false: aluminium foil reflects light well. (a) True (b) False
30. 30.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) black cloth (d) a mirror
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) a rough wooden board (d) dark soil
33. 33.🧺 Which of these is needed for the periscope? (a) vinegar (b) two small mirrors (c) a magnet (d) yeast
34. 34.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
35. 35.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) dark soil
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a pencil (d) a balloon
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the same light (c) the angle of the mirrors
38. 38.⚖️ 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
39. 39.True or false: a ruler is needed for the periscope. (a) False (b) True
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a ruler (d) vinegar

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