Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 117 · 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 dull brick reflects light poorly. (a) True (b) False
2. 2.⚖️ 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) True (b) False
3. 3.🧺 Which of these is needed for the periscope? (a) yeast (b) two small mirrors (c) turmeric powder (d) a balloon
4. 4.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it looks shiny (c) so it can float (d) so light reaches the eye
5. 5.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) a wall (d) the Sun
6. 6.⚖️ 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 measure it (c) we keep it the same
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a pencil (d) a balloon
8. 8.True or false: a battery cell is needed for the periscope. (a) False (b) True
9. 9.⚖️ 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) True (b) False
10. 10.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
11. 11.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
12. 12.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
13. 13.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) the ground (d) taller walls
14. 14.True or false: black cloth reflects light poorly. (a) False (b) True
15. 15.⚖️ 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) how clear the view is (c) the same mirrors (d) the same carton
16. 16.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a farmer (d) a baker
17. 17.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
18. 18.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.🔭 Which of these reflects light well? (a) dark soil (b) a shiny steel plate (c) a rough wooden board (d) black cloth
21. 21.📘 Light bouncing off a mirror is called ___. (a) refraction (b) reflection (c) evaporation (d) magnetism
22. 22.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) vinegar (d) sticky tape
23. 23.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
24. 24.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) dark soil (d) still clear water
25. 25.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) broken glass bits (d) loose glass panes
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a magnet (d) an empty juice carton
28. 28.🔭 Which of these reflects light well? (a) a dull brick (b) a mirror (c) a rough wooden board (d) dark soil
29. 29.True or false: a pencil is needed for the periscope. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) a shiny steel plate (b) dark soil (c) a mirror (d) aluminium foil
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a battery cell (c) an empty juice carton (d) sticky tape
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.True or false: a mirror reflects light well. (a) False (b) True
34. 34.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
36. 36.True or false: sticky tape is needed for the periscope. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) black cloth (d) a shiny steel plate
38. 38.True or false: a dull brick reflects light well. (a) False (b) True
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
40. 40.🔭 How many times does light bounce off a mirror in a simple periscope?

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