Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 555 · 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.⚖️ 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
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) turmeric powder (d) sticky tape
3. 3.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
4. 4.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) True (b) False
8. 8.True or false: a mirror reflects light poorly. (a) False (b) True
9. 9.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) plastic safety mirrors (d) big wall mirrors
10. 10.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
11. 11.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) the ground (d) taller walls
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.True or false: turmeric powder is needed for the periscope. (a) True (b) False
14. 14.True or false: aluminium foil reflects light well. (a) False (b) True
15. 15.True or false: a ruler is needed for the periscope. (a) True (b) False
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.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) aluminium foil (d) dark soil
18. 18.True or false: a pencil is needed for the periscope. (a) False (b) True
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a magnet (c) two small mirrors (d) sticky tape
20. 20.⚖️ 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
21. 21.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
22. 22.True or false: a battery cell is needed for the periscope. (a) False (b) True
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a balloon (c) an empty juice carton (d) two small mirrors
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) vinegar (c) a ruler (d) a pencil
25. 25.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
26. 26.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) still clear water (d) dark soil
27. 27.⚖️ 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 keep it the same (c) we measure it
28. 28.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) black cloth (d) a shiny steel plate
29. 29.🔭 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
30. 30.⚖️ 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) False (b) True
31. 31.⚖️ 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 angle of the mirrors (c) the same mirrors
32. 32.⚖️ 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
33. 33.⚖️ 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
34. 34.True or false: dark soil reflects light well. (a) True (b) False
35. 35.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
36. 36.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
37. 37.⚖️ 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) how clear the view is (c) the same light
38. 38.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a rough wooden board (d) a shiny steel plate
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.True or false: vinegar is not needed for the periscope. (a) True (b) False

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