Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 666 · 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.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
2. 2.True or false: a battery cell is needed for the periscope. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) black cloth (d) a mirror
4. 4.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) still clear water
5. 5.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a baker (d) a farmer
6. 6.🛟 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
7. 7.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 45 degrees (c) 10 degrees (d) 90 degrees
8. 8.🧺 Which of these is needed for the periscope? (a) yeast (b) an empty juice carton (c) vinegar (d) a battery cell
9. 9.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
10. 10.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
11. 11.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) aluminium foil (d) a dull brick
12. 12.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a shiny steel plate (d) a dull brick
13. 13.True or false: a rough wooden board reflects light well. (a) True (b) False
14. 14.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
15. 15.🔭 How many mirrors does a simple periscope use?
16. 16.🔭 How many times does light bounce off a mirror in a simple periscope?
17. 17.True or false: a magnet is needed for the periscope. (a) False (b) True
18. 18.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) black cloth (d) a shiny steel plate
19. 19.True or false: a magnet is not needed for the periscope. (a) False (b) True
20. 20.🧺 Which of these is needed for the periscope? (a) a magnet (b) a battery cell (c) a balloon (d) two small mirrors
21. 21.⚖️ 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 mirrors (c) the angle of the mirrors
22. 22.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a shiny steel plate (c) a mirror (d) still clear water
23. 23.True or false: aluminium foil reflects light well. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) aluminium foil (d) a mirror
25. 25.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
26. 26.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) yeast (d) a ruler
27. 27.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.True or false: black cloth reflects light poorly. (a) True (b) False
29. 29.True or false: a ruler is needed for the periscope. (a) True (b) False
30. 30.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a balloon (c) two small mirrors (d) sticky tape
31. 31.⚖️ 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
32. 32.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.🧺 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
34. 34.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) to make it heavy (c) so it looks shiny (d) so it can float
36. 36.⚖️ 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 carton (c) the angle of the mirrors
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) sticky tape (c) a ruler (d) a pencil
38. 38.⚖️ 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 measure it (c) we keep it the same
39. 39.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) a rainbow (d) only darkness
40. 40.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a shiny steel plate (d) a rough wooden board

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