Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 920 · 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.⚖️ 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) False (b) True
2. 2.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
3. 3.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
4. 4.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
5. 5.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) black cloth (d) dark soil
6. 6.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) a mirror (d) still clear water
7. 7.⚖️ 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
8. 8.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
9. 9.🔭 How many times does light bounce off a mirror in a simple periscope?
10. 10.⚖️ 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 angle of the mirrors (c) the same light (d) how clear the view is
11. 11.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) a dull brick (d) dark soil
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 keep it the same (b) we change it (c) we measure it
13. 13.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) turmeric powder (c) a battery cell (d) yeast
14. 14.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
15. 15.True or false: aluminium foil reflects light poorly. (a) False (b) True
16. 16.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
17. 17.🔭 How many mirrors does a simple periscope use?
18. 18.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) aluminium foil (d) a rough wooden board
19. 19.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) the ground (d) nothing at all
20. 20.True or false: a shiny steel plate reflects light well. (a) False (b) True
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a ruler (c) two small mirrors (d) an empty juice carton
22. 22.🛟 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
23. 23.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a submarine crew (d) a pilot in a plane
24. 24.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a balloon (c) a pencil (d) an empty juice carton
26. 26.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
27. 27.True or false: two small mirrors is needed for the periscope. (a) False (b) True
28. 28.🔭 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
29. 29.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
30. 30.True or false: dark soil reflects light well. (a) True (b) False
31. 31.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) in colour (d) upside down only
32. 32.⚖️ 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 keep it the same (b) we measure it (c) we change it
33. 33.⚖️ 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 same mirrors
34. 34.True or false: a battery cell is needed for the periscope. (a) True (b) False
35. 35.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a dull brick (d) aluminium foil
36. 36.⚖️ 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 measure it (c) we change it
37. 37.True or false: still clear water reflects light poorly. (a) False (b) True
38. 38.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
39. 39.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) reflection (c) evaporation (d) refraction
40. 40.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True

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