Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 936 · 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.🔭 How many times does light bounce off a mirror in a simple periscope?
2. 2.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.True or false: a mirror reflects light poorly. (a) False (b) True
4. 4.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) plastic safety mirrors (d) loose glass panes
5. 5.True or false: black cloth reflects light well. (a) False (b) True
6. 6.True or false: dark soil reflects light poorly. (a) False (b) True
7. 7.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) taller walls (d) nothing at all
8. 8.🧺 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) a magnet
9. 9.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 45 degrees (d) 10 degrees
10. 10.True or false: two small mirrors is needed for the periscope. (a) True (b) False
11. 11.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a balloon (c) an empty juice carton (d) a pencil
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the angle of the mirrors (c) the same light (d) the same mirrors
14. 14.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see in the dark (d) see over a wall
15. 15.True or false: a dull brick reflects light poorly. (a) False (b) True
16. 16.⚖️ 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
17. 17.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
18. 18.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
19. 19.⚖️ 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
20. 20.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) vinegar (d) two small mirrors
21. 21.⚖️ 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 angle of the mirrors (c) the same mirrors
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) turmeric powder (d) a ruler
23. 23.True or false: vinegar is needed for the periscope. (a) True (b) False
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we change it (c) we measure it
25. 25.🔭 How many mirrors does a simple periscope use?
26. 26.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so it looks shiny (d) so light reaches the eye
27. 27.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) evaporation (d) refraction
28. 28.⚖️ 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) the angle of the mirrors (c) how clear the view is
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a pencil (c) sticky tape (d) an empty juice carton
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) vinegar (c) two small mirrors (d) an empty juice carton
31. 31.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
32. 32.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) dark soil (d) a mirror
33. 33.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) yeast (d) a pencil
35. 35.True or false: a shiny steel plate reflects light well. (a) False (b) True
36. 36.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a rough wooden board (c) a shiny steel plate (d) a mirror
37. 37.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) still clear water (d) a mirror
38. 38.True or false: sticky tape is not needed for the periscope. (a) True (b) False
39. 39.⚖️ 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
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a battery cell (c) a pencil (d) a ruler

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