Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 889 · 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.🔭 How many times does light bounce off a mirror in a simple periscope?
2. 2.⚖️ 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 change it (c) we measure it
3. 3.⚖️ 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 mirrors
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) a magnet
5. 5.⚖️ 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
6. 6.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) sticky tape (d) a balloon
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
10. 10.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
11. 11.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
12. 12.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) black cloth (d) aluminium foil
13. 13.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a battery cell (d) an empty juice carton
15. 15.⚖️ 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
16. 16.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
17. 17.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the same carton (c) the object we look at (d) how clear the view is
20. 20.⚖️ 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) the object we look at (c) how clear the view is
21. 21.True or false: a shiny steel plate reflects light well. (a) True (b) False
22. 22.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) a pencil (d) vinegar
23. 23.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees
24. 24.⚖️ 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 change it (c) we measure it
25. 25.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
26. 26.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
27. 27.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) sticky tape (d) a battery cell
29. 29.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
30. 30.🔍 Which is the odd one out? (a) aluminium foil (b) a rough wooden board (c) black cloth (d) dark soil
31. 31.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a farmer (d) a submarine crew
32. 32.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
34. 34.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) hear far sounds (d) see in the dark
35. 35.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
36. 36.🔭 How many mirrors does a simple periscope use?
37. 37.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it can float (d) so it looks shiny
38. 38.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) a brighter view (d) only darkness
39. 39.⚖️ 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
40. 40.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits

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