Periscope STEM Project Worksheet

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

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