Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 108 · 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 reflects light well? (a) a dull brick (b) black cloth (c) dark soil (d) aluminium foil
2. 2.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) broken glass bits (d) loose glass panes
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the angle of the mirrors (c) how clear the view is (d) the same light
5. 5.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) still clear water (d) a rough wooden board
6. 6.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) two small mirrors (d) a magnet
8. 8.True or false: a shiny steel plate reflects light well. (a) True (b) False
9. 9.⚖️ 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) how clear the view is (c) the same light
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) a battery cell (d) two small mirrors
11. 11.🔭 How many times does light bounce off a mirror in a simple periscope?
12. 12.⚖️ 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 object we look at
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
15. 15.⚖️ 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 keep it the same (c) we measure it
16. 16.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
18. 18.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) only short walls (d) taller walls
19. 19.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.⚖️ 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) False (b) True
21. 21.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) only darkness (d) a rainbow
22. 22.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
23. 23.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) a pencil (d) yeast
24. 24.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
25. 25.True or false: a pencil is needed for the periscope. (a) True (b) False
26. 26.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 10 degrees (d) 45 degrees
27. 27.🔭 Which of these reflects light well? (a) a mirror (b) black cloth (c) a rough wooden board (d) dark soil
28. 28.⚖️ 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 same mirrors (c) the angle of the mirrors
29. 29.True or false: aluminium foil reflects light poorly. (a) True (b) False
30. 30.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) to make it heavy (d) so light reaches the eye
31. 31.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) the Sun (d) a tree
32. 32.True or false: yeast is not needed for the periscope. (a) True (b) False
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) turmeric powder (d) an empty juice carton
34. 34.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) much bigger (d) in colour
35. 35.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) reflection (d) refraction
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) yeast (c) two small mirrors (d) a pencil
37. 37.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) a shiny steel plate (d) a dull brick
38. 38.⚖️ 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 measure it (b) we change it (c) we keep it the same
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a balloon (c) a ruler (d) a pencil
40. 40.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to

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