Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 322 · 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.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 10 degrees (d) 180 degrees
2. 2.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) to make it heavy (d) so it looks shiny
3. 3.⚖️ 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
4. 4.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
5. 5.📘 Light bouncing off a mirror is called ___. (a) refraction (b) reflection (c) magnetism (d) evaporation
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same carton (c) the object we look at (d) the angle of the mirrors
7. 7.True or false: black cloth reflects light poorly. (a) True (b) False
8. 8.⚖️ 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
9. 9.True or false: a magnet is needed for the periscope. (a) False (b) True
10. 10.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) vinegar (c) an empty juice carton (d) two small mirrors
11. 11.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) taller walls (d) nothing at all
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
14. 14.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) an empty juice carton (d) turmeric powder
15. 15.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) dark soil (d) a mirror
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
17. 17.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
18. 18.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) a shiny steel plate (d) still clear water
19. 19.True or false: a mirror reflects light poorly. (a) False (b) True
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same carton (c) the same light (d) the angle of the mirrors
21. 21.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a farmer (c) a pilot in a plane (d) a baker
22. 22.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) a dull brick
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a ruler (c) sticky tape (d) an empty juice carton
24. 24.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
25. 25.🔭 Which of these reflects light poorly? (a) still clear water (b) a dull brick (c) aluminium foil (d) a mirror
26. 26.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view
27. 27.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) a rough wooden board (d) a shiny steel plate
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) two small mirrors (d) vinegar
30. 30.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a rough wooden board (d) aluminium foil
31. 31.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) still clear water (d) dark soil
32. 32.🔭 How many times does light bounce off a mirror in a simple periscope?
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
34. 34.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see germs (d) see over a wall
35. 35.True or false: dark soil reflects light poorly. (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) True (b) False
37. 37.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
38. 38.⚖️ 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
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) turmeric powder (d) two small mirrors
40. 40.🔭 Which of these reflects light poorly? (a) a mirror (b) black cloth (c) a shiny steel plate (d) aluminium foil

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