Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 637 · 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 is the odd one out? (a) aluminium foil (b) dark soil (c) black cloth (d) a rough wooden board
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
3. 3.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) nothing at all (d) taller walls
4. 4.🔭 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 can float (d) so it looks shiny
5. 5.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a balloon (d) a pencil
8. 8.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a magnet (c) a balloon (d) a battery cell
9. 9.⚖️ 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
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) two small mirrors (c) sticky tape (d) an empty juice carton
11. 11.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) a shiny steel plate (d) still clear water
12. 12.⚖️ 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 keep it the same (c) we change it
13. 13.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) black cloth (d) aluminium foil
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same carton (c) the angle of the mirrors (d) the same mirrors
15. 15.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
16. 16.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) black cloth (d) a mirror
17. 17.⚖️ 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 object we look at (c) the angle of the mirrors
18. 18.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) in colour (d) upside down only
19. 19.🔭 How many times does light bounce off a mirror in a simple periscope?
20. 20.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
21. 21.⚖️ 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
22. 22.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
23. 23.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a mirror (d) black cloth
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) yeast (d) an empty juice carton
25. 25.True or false: a shiny steel plate reflects light well. (a) True (b) False
26. 26.True or false: yeast is needed for the periscope. (a) False (b) True
27. 27.⚖️ 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 keep it the same (c) we change it
28. 28.True or false: two small mirrors is needed for the periscope. (a) False (b) True
29. 29.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
30. 30.True or false: dark soil reflects light well. (a) True (b) False
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) dark soil (d) a dull brick
33. 33.True or false: a mirror reflects light well. (a) True (b) False
34. 34.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) two pictures (d) a rainbow
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) an empty juice carton (c) a pencil (d) a ruler
36. 36.🔭 Which of these reflects light well? (a) a shiny steel plate (b) black cloth (c) dark soil (d) a dull brick
37. 37.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a tree (d) a friend’s toy
39. 39.🧺 Which of these is needed for the periscope? (a) a ruler (b) yeast (c) turmeric powder (d) a balloon
40. 40.🧺 Which of these is not needed for the periscope? (a) a ruler (b) sticky tape (c) two small mirrors (d) vinegar

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