Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 589 · 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? True or false: the same carton is kept the same. (a) True (b) False
2. 2.🔭 How many times does light bounce off a mirror in a simple periscope?
3. 3.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a shiny steel plate (d) a rough wooden board
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a pencil (d) turmeric powder
8. 8.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
9. 9.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
10. 10.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) yeast (d) a ruler
11. 11.🔍 Which is the odd one out? (a) dark soil (b) still clear water (c) a rough wooden board (d) black cloth
12. 12.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) a brighter view (d) two pictures
13. 13.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) a mirror (d) still clear water
14. 14.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
15. 15.🔍 Which is the odd one out? (a) still clear water (b) dark soil (c) a shiny steel plate (d) a mirror
16. 16.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) refraction (d) magnetism
17. 17.True or false: a mirror reflects light poorly. (a) True (b) False
18. 18.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) a dull brick (d) a shiny steel plate
20. 20.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) a balloon (d) sticky tape
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) vinegar (d) an empty juice carton
22. 22.⚖️ 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 angle of the mirrors (c) the same light
23. 23.⚖️ 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 angle of the mirrors (c) the same carton (d) the same light
24. 24.🔭 Which of these reflects light well? (a) a rough wooden board (b) aluminium foil (c) black cloth (d) a dull brick
25. 25.True or false: yeast is not needed for the periscope. (a) True (b) False
26. 26.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
27. 27.True or false: a pencil is needed for the periscope. (a) False (b) True
28. 28.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
29. 29.True or false: still clear water reflects light poorly. (a) True (b) False
30. 30.⚖️ 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) True (b) False
31. 31.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
32. 32.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a mirror (d) dark soil
33. 33.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) only short walls (d) taller walls
34. 34.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a farmer (d) a pilot in a plane
35. 35.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
36. 36.True or false: a dull brick reflects light well. (a) False (b) True
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) an empty juice carton (d) a battery cell
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is
39. 39.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) vinegar (d) a pencil

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