Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 777 · 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.True or false: aluminium foil reflects light well. (a) False (b) True
3. 3.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) nothing at all (d) the ground
4. 4.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
5. 5.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) a tree (d) the Sun
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a balloon (d) a ruler
7. 7.True or false: two small mirrors is needed for the periscope. (a) False (b) True
8. 8.🔭 How many times does light bounce off a mirror in a simple periscope?
9. 9.🧺 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) turmeric powder
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) vinegar (d) two small mirrors
11. 11.🛟 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
12. 12.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) dark soil (d) a mirror
13. 13.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a magnet (c) a pencil (d) an empty juice carton
15. 15.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) so light reaches the eye (d) to make it heavy
16. 16.⚖️ 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 light (c) the same carton (d) how clear the view is
17. 17.⚖️ 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 change it (c) we measure it
18. 18.🔭 How many mirrors does a simple periscope use?
19. 19.🧺 Which of these is not needed for the periscope? (a) a balloon (b) sticky tape (c) two small mirrors (d) a ruler
20. 20.🧺 Which of these is needed for the periscope? (a) yeast (b) turmeric powder (c) vinegar (d) a ruler
21. 21.True or false: a rough wooden board reflects light well. (a) True (b) False
22. 22.⚖️ 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
23. 23.🔭 Which of these reflects light poorly? (a) a mirror (b) a dull brick (c) a shiny steel plate (d) still clear water
24. 24.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a baker (d) a farmer
25. 25.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) evaporation (d) magnetism
26. 26.⚖️ 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) True (b) False
27. 27.⚖️ 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
28. 28.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a battery cell (c) two small mirrors (d) a pencil
29. 29.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
30. 30.True or false: a shiny steel plate reflects light well. (a) False (b) True
31. 31.True or false: a mirror reflects light poorly. (a) False (b) True
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
33. 33.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
35. 35.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
36. 36.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) a ruler (d) a magnet
37. 37.True or false: sticky tape is not needed for the periscope. (a) False (b) True
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
39. 39.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False

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