Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 686 · 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.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
2. 2.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
3. 3.🧺 Which of these is needed for the periscope? (a) a magnet (b) vinegar (c) a pencil (d) yeast
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
6. 6.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) a shiny steel plate (d) a dull brick
7. 7.⚖️ 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 keep it the same (c) we change it
8. 8.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) plastic safety mirrors (d) big wall mirrors
9. 9.⚖️ 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
10. 10.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) an empty juice carton (d) turmeric powder
11. 11.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) upside down only (d) flipped left to right
12. 12.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
13. 13.True or false: yeast is not needed for the periscope. (a) True (b) False
14. 14.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
15. 15.True or false: sticky tape is not needed for the periscope. (a) True (b) False
16. 16.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) a ruler (d) a battery cell
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same carton (c) how clear the view is (d) the angle of the mirrors
18. 18.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
19. 19.🔭 Which of these reflects light well? (a) dark soil (b) a shiny steel plate (c) a rough wooden board (d) black cloth
20. 20.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) a rainbow (d) two pictures
21. 21.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
22. 22.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a rough wooden board (d) still clear water
23. 23.⚖️ 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 mirrors (d) the same light
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) turmeric powder (d) an empty juice carton
25. 25.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) the ground (d) taller walls
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see germs (d) see over a wall
28. 28.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a balloon (c) yeast (d) turmeric powder
29. 29.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a submarine crew (d) a baker
30. 30.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 10 degrees (d) 180 degrees
31. 31.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) refraction (d) magnetism
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) True (b) False
33. 33.True or false: black cloth reflects light poorly. (a) False (b) True
34. 34.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.True or false: vinegar is needed for the periscope. (a) False (b) True
36. 36.⚖️ 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
37. 37.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
38. 38.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.⚖️ 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
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a ruler (d) a battery cell

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