Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 505 · 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.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.⚖️ 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
4. 4.🔭 Which of these reflects light well? (a) dark soil (b) a mirror (c) a rough wooden board (d) black cloth
5. 5.⚖️ 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 change it (b) we keep it the same (c) we measure it
6. 6.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.🧺 Which of these is not needed for the periscope? (a) a magnet (b) an empty juice carton (c) two small mirrors (d) a pencil
9. 9.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a pilot in a plane (d) a farmer
10. 10.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
11. 11.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 10 degrees (d) 45 degrees
12. 12.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) black cloth
13. 13.True or false: a dull brick reflects light poorly. (a) True (b) False
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
15. 15.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) a battery cell (d) an empty juice carton
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🔭 Which of these reflects light poorly? (a) a dull brick (b) a mirror (c) still clear water (d) aluminium foil
18. 18.⚖️ 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
19. 19.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
20. 20.True or false: sticky tape is not needed for the periscope. (a) True (b) False
21. 21.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a ruler (c) a balloon (d) yeast
22. 22.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) a balloon (d) a ruler
23. 23.True or false: still clear water reflects light poorly. (a) True (b) False
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 keep it the same (b) we measure it (c) we change it
25. 25.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see germs (d) see over a wall
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) how clear the view is (c) the angle of the mirrors
27. 27.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) still clear water (d) a rough wooden board
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a battery cell (c) two small mirrors (d) a pencil
29. 29.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a dull brick (d) a mirror
30. 30.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) yeast (c) an empty juice carton (d) a pencil
33. 33.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
34. 34.True or false: vinegar is not needed for the periscope. (a) True (b) False
35. 35.True or false: two small mirrors is needed for the periscope. (a) True (b) False
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a ruler (c) a pencil (d) sticky tape
37. 37.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a dull brick (d) a mirror
38. 38.⚖️ 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 same mirrors (d) how clear the view is
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
40. 40.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors

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