Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 257 · 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 carton (b) the same light (c) the object we look at (d) how clear the view is
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
3. 3.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
4. 4.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a rough wooden board (c) a dull brick (d) black cloth
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a magnet (d) an empty juice carton
6. 6.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) black cloth (d) still clear water
7. 7.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) loose glass panes (d) broken glass bits
8. 8.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
9. 9.🔭 How many mirrors does a simple periscope use?
10. 10.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.True or false: a battery cell is needed for the periscope. (a) False (b) True
13. 13.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) dark soil
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) an empty juice carton (c) a pencil (d) sticky tape
15. 15.⚖️ 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
16. 16.True or false: turmeric powder is needed for the periscope. (a) False (b) True
17. 17.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
18. 18.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
19. 19.🔮 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
20. 20.True or false: a pencil is needed for the periscope. (a) True (b) False
21. 21.True or false: still clear water reflects light well. (a) True (b) False
22. 22.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a pilot in a plane (d) a submarine crew
23. 23.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
24. 24.⚖️ 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
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same carton
26. 26.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
27. 27.⚖️ 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) how clear the view is (c) the angle of the mirrors
28. 28.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) in colour (d) much bigger
29. 29.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) nothing at all (d) only short walls
30. 30.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) a battery cell (d) an empty juice carton
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: sticky tape is not needed for the periscope. (a) False (b) True
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a battery cell (d) two small mirrors
34. 34.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) turmeric powder (d) sticky tape
35. 35.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
36. 36.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) a shiny steel plate (d) a mirror
37. 37.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
39. 39.True or false: a balloon is needed for the periscope. (a) True (b) False
40. 40.True or false: black cloth reflects light poorly. (a) True (b) False

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