Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 191 · 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.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) reflection (d) magnetism
2. 2.⚖️ 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 mirrors (c) the object we look at (d) how clear the view is
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a ruler (d) vinegar
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) sticky tape (d) a magnet
6. 6.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) black cloth (d) a mirror
7. 7.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) hear far sounds (d) see germs
8. 8.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
9. 9.⚖️ 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 change it (c) we keep it the same
10. 10.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
11. 11.🔭 How many times does light bounce off a mirror in a simple periscope?
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) turmeric powder (c) an empty juice carton (d) two small mirrors
14. 14.True or false: black cloth reflects light well. (a) False (b) True
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.🔍 Which is the odd one out? (a) a dull brick (b) aluminium foil (c) a rough wooden board (d) black cloth
17. 17.True or false: a battery cell is not needed for the periscope. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) a rough wooden board (d) black cloth
19. 19.True or false: a rough wooden board reflects light poorly. (a) True (b) False
20. 20.🧺 Which of these is not needed for the periscope? (a) a magnet (b) an empty juice carton (c) sticky tape (d) two small mirrors
21. 21.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a ruler (d) a battery cell
24. 24.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
25. 25.🔭 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
26. 26.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) a tree (d) the Sun
27. 27.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
28. 28.⚖️ 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 measure it (b) we change it (c) we keep it the same
29. 29.True or false: a pencil is needed for the periscope. (a) False (b) True
30. 30.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 10 degrees (d) 90 degrees
31. 31.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) still clear water (b) a dull brick (c) black cloth (d) a rough wooden board
33. 33.⚖️ 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
34. 34.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) how clear the view is (c) the angle of the mirrors
36. 36.True or false: a pencil is not needed for the periscope. (a) True (b) False
37. 37.⚖️ 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
38. 38.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.🔭 Which of these reflects light well? (a) a dull brick (b) a mirror (c) black cloth (d) a rough wooden board
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) an empty juice carton (d) turmeric powder

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