Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 225 · 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) a ruler (b) an empty juice carton (c) a balloon (d) two small mirrors
2. 2.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.True or false: two small mirrors is needed for the periscope. (a) False (b) True
5. 5.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 10 degrees (d) 180 degrees
6. 6.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) a shiny steel plate (d) black cloth
7. 7.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
8. 8.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the object we look at (c) the same carton (d) how clear the view is
10. 10.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) a pencil (d) yeast
11. 11.⚖️ 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 angle of the mirrors (c) the same light (d) the same carton
12. 12.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
13. 13.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
14. 14.True or false: turmeric powder is needed for the periscope. (a) False (b) True
15. 15.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
16. 16.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
17. 17.🔭 How many times does light bounce off a mirror in a simple periscope?
18. 18.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.True or false: a magnet is needed for the periscope. (a) True (b) False
20. 20.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a submarine crew (d) a farmer
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) yeast (d) sticky tape
22. 22.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) an empty juice carton (c) a balloon (d) yeast
23. 23.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) still clear water (d) aluminium foil
24. 24.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
26. 26.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.True or false: a dull brick reflects light well. (a) True (b) False
28. 28.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
29. 29.⚖️ 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 measure it (b) we change it (c) we keep it the same
30. 30.⚖️ 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
31. 31.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
33. 33.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) much bigger (d) upside down only
34. 34.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) vinegar (d) sticky tape
36. 36.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
37. 37.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
38. 38.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it looks shiny (c) so light reaches the eye (d) so it can float
39. 39.🔍 Which is the odd one out? (a) still clear water (b) dark soil (c) a rough wooden board (d) a dull brick
40. 40.True or false: a rough wooden board reflects light well. (a) True (b) False

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