Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 87 · 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.True or false: dark soil reflects light poorly. (a) False (b) True
2. 2.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) much bigger (d) upside down only
3. 3.True or false: a ruler is needed for the periscope. (a) True (b) False
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) sticky tape (d) yeast
5. 5.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a balloon (d) sticky tape
7. 7.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) vinegar (c) a ruler (d) two small mirrors
8. 8.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a wall (d) a friend’s toy
9. 9.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a dull brick (d) a shiny steel plate
10. 10.🔭 Which of these reflects light well? (a) still clear water (b) dark soil (c) black cloth (d) a dull brick
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
12. 12.🛟 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
13. 13.True or false: black cloth reflects light well. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) aluminium foil (d) dark soil
15. 15.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) still clear water (d) a rough wooden board
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) True (b) False
17. 17.⚖️ 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 same mirrors (c) the same carton (d) the angle of the mirrors
18. 18.🔭 Which of these reflects light poorly? (a) a mirror (b) black cloth (c) a shiny steel plate (d) aluminium foil
19. 19.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a battery cell (c) a ruler (d) a pencil
21. 21.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) sticky tape (d) turmeric powder
22. 22.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
23. 23.🔮 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
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.🔭 How many times does light bounce off a mirror in a simple periscope?
26. 26.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
27. 27.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a magnet (c) a ruler (d) a pencil
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a pencil (c) two small mirrors (d) sticky tape
30. 30.True or false: vinegar is needed for the periscope. (a) True (b) False
31. 31.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
32. 32.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.🔭 How many mirrors does a simple periscope use?
34. 34.⚖️ 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 carton
35. 35.⚖️ 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 measure it (c) we keep it the same
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) the same carton (c) how clear the view is (d) the angle of the mirrors
37. 37.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) sticky tape (d) a magnet
38. 38.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so light reaches the eye (d) so it can float
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.True or false: a battery cell is not needed for the periscope. (a) False (b) True

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