Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 98 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a magnet (c) a pencil (d) two small mirrors
2. 2.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) yeast (d) two small mirrors
3. 3.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) a balloon (d) a ruler
5. 5.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a dull brick (d) a shiny steel plate
6. 6.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) dark soil (d) a rough wooden board
7. 7.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) loose glass panes (d) big wall mirrors
8. 8.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
9. 9.🔭 How many mirrors does a simple periscope use?
10. 10.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) aluminium foil (d) a mirror
11. 11.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.⚖️ 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 same light (c) how clear the view is
13. 13.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) black cloth (d) a mirror
14. 14.True or false: a mirror reflects light well. (a) True (b) False
15. 15.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) vinegar (d) a ruler
16. 16.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) an empty juice carton (d) yeast
17. 17.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a shiny steel plate (d) a rough wooden board
18. 18.🔭 How many times does light bounce off a mirror in a simple periscope?
19. 19.⚖️ 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
20. 20.True or false: dark soil reflects light poorly. (a) False (b) True
21. 21.True or false: a rough wooden board reflects light well. (a) False (b) True
22. 22.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) reflection (d) refraction
23. 23.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
24. 24.True or false: black cloth reflects light well. (a) True (b) False
25. 25.True or false: vinegar is needed for the periscope. (a) False (b) True
26. 26.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) black cloth (d) aluminium foil
27. 27.⚖️ 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 keep it the same (b) we measure it (c) we change it
28. 28.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
29. 29.True or false: aluminium foil reflects light well. (a) True (b) False
30. 30.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
31. 31.True or false: a mirror reflects light poorly. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) still clear water (d) a dull brick
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) two small mirrors (d) sticky tape
34. 34.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) taller walls (d) only short walls
35. 35.⚖️ 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
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) how clear the view is (c) the same light (d) the angle of the mirrors
37. 37.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
38. 38.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a battery cell (c) a pencil (d) two small mirrors
39. 39.True or false: yeast is needed for the periscope. (a) False (b) True
40. 40.⚖️ 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) False (b) True

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