Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 633 · 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 of these is not needed for the periscope? (a) two small mirrors (b) a balloon (c) sticky tape (d) an empty juice carton
2. 2.🔮 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
3. 3.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) a dull brick (d) dark soil
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) turmeric powder (c) sticky tape (d) an empty juice carton
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) False (b) True
6. 6.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
8. 8.🔍 Which is the odd one out? (a) dark soil (b) aluminium foil (c) a shiny steel plate (d) still clear water
9. 9.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
10. 10.🔭 How many mirrors does a simple periscope use?
11. 11.⚖️ 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 keep it the same (c) we measure it
12. 12.⚖️ 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 mirrors (b) the same light (c) the same carton (d) the angle of the mirrors
13. 13.🔭 Which of these reflects light well? (a) black cloth (b) a mirror (c) a dull brick (d) dark soil
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) yeast (d) a ruler
16. 16.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
17. 17.True or false: sticky tape is not needed for the periscope. (a) True (b) False
18. 18.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
19. 19.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
20. 20.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
21. 21.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) still clear water (d) dark soil
23. 23.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) a magnet (d) two small mirrors
24. 24.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
25. 25.⚖️ 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
26. 26.⚖️ 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 change it (c) we keep it the same
27. 27.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) vinegar (c) a ruler (d) two small mirrors
28. 28.🔭 How many times does light bounce off a mirror in a simple periscope?
29. 29.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) to make it heavy (d) so light reaches the eye
30. 30.⚖️ 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 light (c) how clear the view is
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same carton (c) the angle of the mirrors (d) the same mirrors
32. 32.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) broken glass bits (d) big wall mirrors
33. 33.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a dull brick (d) still clear water
34. 34.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.⚖️ 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
36. 36.🧺 Which of these is needed for the periscope? (a) a balloon (b) a pencil (c) a battery cell (d) turmeric powder
37. 37.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) a brighter view (d) only darkness
38. 38.True or false: black cloth reflects light well. (a) False (b) True
39. 39.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) sticky tape (d) a balloon
40. 40.⚖️ 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

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