Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 105 · 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 angle of the mirrors is the one thing we change. (a) True (b) False
2. 2.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) a pencil (d) a magnet
3. 3.🔮 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
4. 4.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
5. 5.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) reflection (d) magnetism
6. 6.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 90 degrees (d) 45 degrees
7. 7.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) an empty juice carton (c) two small mirrors (d) sticky tape
8. 8.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
9. 9.True or false: a balloon is needed for the periscope. (a) True (b) False
10. 10.⚖️ 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) False (b) True
11. 11.⚖️ 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) how clear the view is (d) the same mirrors
12. 12.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
13. 13.True or false: a battery cell is needed for the periscope. (a) True (b) False
14. 14.⚖️ 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
15. 15.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
16. 16.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
17. 17.True or false: a magnet is needed for the periscope. (a) True (b) False
18. 18.True or false: dark soil reflects light well. (a) False (b) True
19. 19.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
20. 20.🔭 How many times does light bounce off a mirror in a simple periscope?
21. 21.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a rough wooden board (d) aluminium foil
22. 22.⚖️ 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
23. 23.⚖️ 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
24. 24.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
25. 25.True or false: a rough wooden board reflects light well. (a) True (b) False
26. 26.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) a brighter view (d) two pictures
27. 27.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) aluminium foil
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.True or false: a shiny steel plate reflects light well. (a) False (b) True
30. 30.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
31. 31.⚖️ 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 same carton (c) the angle of the mirrors
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) two small mirrors (d) a ruler
33. 33.⚖️ 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 keep it the same (b) we change it (c) we measure it
34. 34.🔭 How many mirrors does a simple periscope use?
35. 35.🧺 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) turmeric powder
36. 36.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) aluminium foil (d) still clear water
37. 37.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
39. 39.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
40. 40.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) taller walls (d) only short walls

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