Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 91 · 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: turmeric powder is needed for the periscope. (a) True (b) False
2. 2.🔭 Which of these reflects light poorly? (a) black cloth (b) a mirror (c) a shiny steel plate (d) still clear water
3. 3.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
4. 4.⚖️ 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) the same mirrors (c) how clear the view is
5. 5.⚖️ 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 keep it the same (c) we measure it
6. 6.🔮 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
7. 7.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) hear far sounds (d) see over a wall
8. 8.🔮 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
9. 9.🔭 How many mirrors does a simple periscope use?
10. 10.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) so light reaches the eye (d) to make it heavy
11. 11.⚖️ 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 object we look at
12. 12.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) yeast (d) a pencil
13. 13.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) dark soil (d) a rough wooden board
14. 14.True or false: a shiny steel plate reflects light well. (a) False (b) True
15. 15.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) an empty juice carton (d) yeast
17. 17.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) loose glass panes (d) big wall mirrors
18. 18.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
19. 19.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) turmeric powder (d) an empty juice carton
20. 20.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) turmeric powder (d) sticky tape
21. 21.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) magnetism (d) reflection
22. 22.True or false: yeast is not needed for the periscope. (a) True (b) False
23. 23.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a balloon (c) two small mirrors (d) a ruler
25. 25.True or false: black cloth reflects light well. (a) True (b) False
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) turmeric powder (c) two small mirrors (d) an empty juice carton
27. 27.🧺 Which of these is needed for the periscope? (a) a balloon (b) a ruler (c) a battery cell (d) turmeric powder
28. 28.⚖️ 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
29. 29.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) still clear water (d) a rough wooden board
30. 30.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) dark soil (d) still clear water
31. 31.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
32. 32.⚖️ 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 angle of the mirrors (d) the object we look at
33. 33.⚖️ 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 keep it the same (c) we measure it
34. 34.⚖️ 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) the same carton (c) how clear the view is (d) the same light
35. 35.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) a rough wooden board (d) a mirror
36. 36.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
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.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) a pencil (d) a balloon
39. 39.True or false: a mirror reflects light well. (a) True (b) False
40. 40.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees

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