Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 548 · 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? What do we do with “the object we look at”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) sticky tape (d) a balloon
3. 3.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) a shiny steel plate (d) dark soil
4. 4.🧺 Which of these is needed for the periscope? (a) yeast (b) vinegar (c) an empty juice carton (d) a battery cell
5. 5.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) magnetism (d) refraction
6. 6.True or false: vinegar is not needed for the periscope. (a) False (b) True
7. 7.True or false: yeast is not needed for the periscope. (a) False (b) True
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a magnet (c) an empty juice carton (d) sticky tape
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
10. 10.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) a magnet (d) two small mirrors
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) yeast (d) an empty juice carton
12. 12.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) dark soil (d) still clear water
13. 13.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) aluminium foil (d) a rough wooden board
14. 14.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
15. 15.⚖️ 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 mirrors (d) the same carton
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a pencil (c) an empty juice carton (d) a ruler
17. 17.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
18. 18.True or false: a dull brick reflects light well. (a) False (b) True
19. 19.True or false: black cloth reflects light poorly. (a) False (b) True
20. 20.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same light (b) the object we look at (c) the same mirrors (d) the angle of the mirrors
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
23. 23.🔭 How many mirrors does a simple periscope use?
24. 24.True or false: dark soil reflects light poorly. (a) False (b) True
25. 25.⚖️ 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
26. 26.True or false: two small mirrors is needed for the periscope. (a) True (b) False
27. 27.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) see in the dark (d) hear far sounds
28. 28.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) so it looks shiny (d) to make it heavy
29. 29.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it
31. 31.🔭 How many times does light bounce off a mirror in a simple periscope?
32. 32.⚖️ 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
33. 33.True or false: black cloth reflects light well. (a) False (b) True
34. 34.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.True or false: a battery cell is needed for the periscope. (a) False (b) True
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
37. 37.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
38. 38.🔭 Which of these reflects light poorly? (a) still clear water (b) black cloth (c) a shiny steel plate (d) aluminium foil
39. 39.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.🔮 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

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