Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 613 · 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? Which of these is what we measure? (a) the same light (b) how clear the view is (c) the object we look at (d) the same mirrors
2. 2.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a submarine crew (d) a pilot in a plane
3. 3.True or false: a dull brick reflects light poorly. (a) True (b) False
4. 4.🧺 Which of these is needed for the periscope? (a) yeast (b) a battery cell (c) a balloon (d) sticky tape
5. 5.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
6. 6.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) turmeric powder (d) sticky tape
7. 7.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) black cloth (d) a dull brick
8. 8.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
9. 9.⚖️ 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
10. 10.🔍 Which is the odd one out? (a) still clear water (b) dark soil (c) black cloth (d) a dull brick
11. 11.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) yeast (d) a ruler
12. 12.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
13. 13.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) a mirror (d) black cloth
14. 14.🔭 Which of these reflects light poorly? (a) dark soil (b) a mirror (c) a shiny steel plate (d) still clear water
15. 15.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
16. 16.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
17. 17.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
18. 18.🔭 How many mirrors does a simple periscope use?
19. 19.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
20. 20.True or false: a ruler is needed for the periscope. (a) False (b) True
21. 21.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) vinegar (d) an empty juice carton
23. 23.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) black cloth (d) a rough wooden board
24. 24.🔭 How many times does light bounce off a mirror in a simple periscope?
25. 25.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
26. 26.True or false: aluminium foil reflects light poorly. (a) False (b) True
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a magnet (c) a pencil (d) an empty juice carton
28. 28.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it looks shiny (c) so it can float (d) so light reaches the eye
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) yeast (d) sticky tape
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
31. 31.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) a shiny steel plate (d) aluminium foil
33. 33.⚖️ 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
34. 34.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
35. 35.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) an empty juice carton (d) a battery cell
37. 37.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
38. 38.True or false: still clear water reflects light poorly. (a) False (b) True
39. 39.True or false: a magnet is needed for the periscope. (a) False (b) True
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) sticky tape (d) two small mirrors

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