Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 318 · 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? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.⚖️ 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
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) vinegar (d) an empty juice carton
4. 4.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) aluminium foil (d) a rough wooden board
5. 5.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
6. 6.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 10 degrees (d) 180 degrees
7. 7.⚖️ 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) the object we look at (c) how clear the view is
8. 8.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a dull brick (d) a shiny steel plate
9. 9.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
10. 10.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.⚖️ 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
12. 12.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
13. 13.🔭 How many times does light bounce off a mirror in a simple periscope?
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same mirrors (c) the same light (d) the object we look at
15. 15.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) sticky tape (d) a battery cell
16. 16.🧺 Which of these is not needed for the periscope? (a) yeast (b) two small mirrors (c) a pencil (d) an empty juice carton
17. 17.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
18. 18.⚖️ 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) True (b) False
19. 19.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a mirror (d) dark soil
20. 20.⚖️ 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 measure it (b) we keep it the same (c) we change it
21. 21.True or false: a mirror reflects light poorly. (a) True (b) False
22. 22.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
23. 23.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
24. 24.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so it can float (d) so light reaches the eye
25. 25.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) a dull brick (d) still clear water
27. 27.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) a shiny steel plate (d) black cloth
28. 28.True or false: a ruler is not needed for the periscope. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) dark soil
30. 30.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a farmer (c) a baker (d) a pilot in a plane
31. 31.🔭 How many mirrors does a simple periscope use?
32. 32.True or false: two small mirrors is needed for the periscope. (a) True (b) False
33. 33.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) reflection (d) refraction
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) yeast (d) two small mirrors
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) a balloon (d) sticky tape
36. 36.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
37. 37.True or false: sticky tape is not needed for the periscope. (a) True (b) False
38. 38.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
39. 39.⚖️ 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 measure it (b) we change it (c) we keep it the same
40. 40.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) a dull brick (d) a mirror

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