Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 558 · 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: a mirror reflects light poorly. (a) False (b) True
2. 2.⚖️ 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) True (b) False
3. 3.⚖️ 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 keep it the same (c) we change it
4. 4.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so it looks shiny (d) so light reaches the eye
5. 5.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a rainbow (d) a brighter view
6. 6.True or false: a shiny steel plate reflects light well. (a) True (b) False
7. 7.🧺 Which of these is needed for the periscope? (a) a magnet (b) two small mirrors (c) vinegar (d) a balloon
8. 8.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) only short walls (d) taller walls
9. 9.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
10. 10.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
11. 11.🔭 Which of these reflects light poorly? (a) dark soil (b) aluminium foil (c) a shiny steel plate (d) a mirror
12. 12.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
13. 13.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
14. 14.True or false: a battery cell is needed for the periscope. (a) True (b) False
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a battery cell (d) a pencil
16. 16.True or false: a rough wooden board reflects light well. (a) True (b) False
17. 17.⚖️ 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 light (c) the angle of the mirrors
18. 18.True or false: a battery cell is not needed for the periscope. (a) False (b) True
19. 19.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) loose glass panes (d) big wall mirrors
20. 20.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) a shiny steel plate (d) still clear water
21. 21.🔭 How many times does light bounce off a mirror in a simple periscope?
22. 22.⚖️ 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 keep it the same (c) we measure it
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a rough wooden board (d) a mirror
25. 25.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) black cloth (d) still clear water
26. 26.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
27. 27.True or false: a mirror reflects light well. (a) True (b) False
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a balloon (c) sticky tape (d) an empty juice carton
29. 29.🔮 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
30. 30.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) vinegar (d) two small mirrors
34. 34.⚖️ 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
35. 35.⚖️ 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
36. 36.🔭 Which of these reflects light well? (a) a shiny steel plate (b) dark soil (c) a rough wooden board (d) a dull brick
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
38. 38.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see in the dark (d) see over a wall
39. 39.True or false: a ruler is not needed for the periscope. (a) True (b) False
40. 40.⚖️ 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

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