Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 483 · 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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
2. 2.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) big wall mirrors (d) plastic safety mirrors
3. 3.⚖️ 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
4. 4.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a pencil (d) vinegar
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a battery cell (c) two small mirrors (d) a ruler
7. 7.⚖️ 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 angle of the mirrors (c) the same mirrors (d) the same carton
8. 8.True or false: a magnet is not needed for the periscope. (a) False (b) True
9. 9.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
10. 10.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
11. 11.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a dull brick (d) a mirror
12. 12.True or false: sticky tape is needed for the periscope. (a) False (b) True
13. 13.⚖️ 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) False (b) True
14. 14.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
15. 15.🧺 Which of these is needed for the periscope? (a) a balloon (b) turmeric powder (c) a battery cell (d) an empty juice carton
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.⚖️ 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) False (b) True
18. 18.True or false: aluminium foil reflects light well. (a) True (b) False
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) how clear the view is (c) the same carton (d) the same light
20. 20.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) only darkness (d) two pictures
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) a magnet (d) an empty juice carton
22. 22.True or false: black cloth reflects light poorly. (a) False (b) True
23. 23.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.⚖️ 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 change it (c) we measure it
25. 25.True or false: a shiny steel plate reflects light well. (a) False (b) True
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
27. 27.🔭 How many times does light bounce off a mirror in a simple periscope?
28. 28.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) see over a wall (d) hear far sounds
29. 29.⚖️ 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
30. 30.True or false: a mirror reflects light poorly. (a) False (b) True
31. 31.True or false: two small mirrors is needed for the periscope. (a) False (b) True
32. 32.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
33. 33.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) vinegar (c) a ruler (d) two small mirrors
34. 34.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) a dull brick (d) a rough wooden board
35. 35.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) only short walls (d) the ground
36. 36.🔭 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
37. 37.⚖️ 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
38. 38.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
39. 39.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) in colour (d) upside down only
40. 40.🧺 Do we need yeast for the periscope? (a) needed (b) not needed

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