Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 780 · 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 times does light bounce off a mirror in a simple periscope?
2. 2.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) black cloth (d) aluminium foil
4. 4.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a baker (d) a submarine crew
5. 5.⚖️ 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
6. 6.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a battery cell (c) a magnet (d) turmeric powder
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) sticky tape (d) a balloon
8. 8.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
9. 9.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the same carton (c) how clear the view is
11. 11.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) sticky tape (c) a ruler (d) two small mirrors
12. 12.True or false: dark soil reflects light well. (a) False (b) True
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) how clear the view is (c) the same mirrors (d) the angle of the mirrors
14. 14.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) a pencil (d) a magnet
15. 15.🧺 Which of these is not needed for the periscope? (a) a ruler (b) yeast (c) an empty juice carton (d) two small mirrors
16. 16.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
17. 17.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) reflection (d) magnetism
18. 18.🔭 Which of these reflects light well? (a) a rough wooden board (b) a mirror (c) dark soil (d) black cloth
19. 19.True or false: a mirror reflects light well. (a) True (b) False
20. 20.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
21. 21.⚖️ 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
22. 22.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) vinegar (c) a battery cell (d) a magnet
23. 23.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) dark soil (d) a dull brick
24. 24.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
25. 25.⚖️ 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 measure it (c) we keep it the same
26. 26.🔭 How many mirrors does a simple periscope use?
27. 27.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.🧺 Which of these is not needed for the periscope? (a) a ruler (b) turmeric powder (c) a pencil (d) an empty juice carton
29. 29.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a tree (d) a wall
30. 30.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) plastic safety mirrors (d) big wall mirrors
31. 31.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) two pictures (d) a brighter view
32. 32.⚖️ 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
33. 33.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
34. 34.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
35. 35.🔭 Which of these reflects light well? (a) black cloth (b) a shiny steel plate (c) a rough wooden board (d) a dull brick
36. 36.True or false: a magnet is needed for the periscope. (a) True (b) False
37. 37.🔭 Which of these reflects light well? (a) still clear water (b) a rough wooden board (c) dark soil (d) black cloth
38. 38.⚖️ 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 carton (b) the same mirrors (c) the angle of the mirrors (d) the same light
39. 39.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) yeast (c) vinegar (d) sticky tape
40. 40.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so it looks shiny (d) so light reaches the eye

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