Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 408 · 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.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) dark soil (d) a dull brick
3. 3.⚖️ 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 mirrors (b) the angle of the mirrors (c) the object we look at (d) the same carton
4. 4.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) still clear water (d) aluminium foil
5. 5.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
6. 6.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) yeast (d) an empty juice carton
7. 7.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
8. 8.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
9. 9.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) still clear water (d) aluminium foil
10. 10.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
12. 12.🧺 Which of these is not needed for the periscope? (a) a balloon (b) an empty juice carton (c) two small mirrors (d) a pencil
13. 13.⚖️ 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 change it (b) we measure it (c) we keep it the same
14. 14.🔭 How many times does light bounce off a mirror in a simple periscope?
15. 15.🔍 Which is the odd one out? (a) aluminium foil (b) a rough wooden board (c) dark soil (d) a dull brick
16. 16.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
17. 17.True or false: a pencil is not needed for the periscope. (a) True (b) False
18. 18.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
19. 19.🔭 How many mirrors does a simple periscope use?
20. 20.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a battery cell (c) sticky tape (d) an empty juice carton
21. 21.True or false: a dull brick reflects light poorly. (a) True (b) False
22. 22.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
23. 23.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
24. 24.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
25. 25.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) dark soil (d) still clear water
26. 26.⚖️ 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 change it (b) we keep it the same (c) we measure it
27. 27.True or false: black cloth reflects light well. (a) True (b) False
28. 28.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
29. 29.True or false: black cloth reflects light poorly. (a) True (b) False
30. 30.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) the Sun (d) a tree
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
32. 32.True or false: a ruler is not needed for the periscope. (a) False (b) True
33. 33.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) vinegar (d) a ruler
34. 34.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a submarine crew (d) a pilot in a plane
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a battery cell (c) an empty juice carton (d) a ruler
36. 36.🔭 Which of these reflects light well? (a) a rough wooden board (b) a shiny steel plate (c) a dull brick (d) dark soil
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) an empty juice carton (d) turmeric powder
38. 38.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) big wall mirrors (d) loose glass panes
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
40. 40.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 45 degrees (c) 90 degrees (d) 10 degrees

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