Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 336 · 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.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) a rainbow (d) two pictures
2. 2.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.⚖️ 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
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
5. 5.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) black cloth (d) aluminium foil
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) turmeric powder (c) a pencil (d) a ruler
7. 7.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
8. 8.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) upside down only (d) much bigger
9. 9.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) vinegar (d) sticky tape
10. 10.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) a mirror (d) a shiny steel plate
11. 11.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) evaporation (d) refraction
12. 12.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
13. 13.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so it looks shiny (d) so light reaches the eye
14. 14.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) big wall mirrors (d) plastic safety mirrors
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.True or false: vinegar is needed for the periscope. (a) True (b) False
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a balloon (c) a ruler (d) an empty juice carton
18. 18.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.🧺 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) yeast
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) the angle of the mirrors (b) the same carton (c) the same light (d) how clear the view is
21. 21.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) a rough wooden board (d) aluminium foil
23. 23.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a farmer (d) a submarine crew
24. 24.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) a shiny steel plate (d) still clear water
25. 25.🔭 How many mirrors does a simple periscope use?
26. 26.⚖️ 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
27. 27.🧺 Which of these is needed for the periscope? (a) a magnet (b) yeast (c) a battery cell (d) sticky tape
28. 28.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 90 degrees (d) 10 degrees
29. 29.🧺 Which of these is not needed for the periscope? (a) a magnet (b) a ruler (c) an empty juice carton (d) sticky tape
30. 30.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) sticky tape (d) turmeric powder
31. 31.True or false: a rough wooden board reflects light poorly. (a) True (b) False
32. 32.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
33. 33.⚖️ 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
34. 34.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) aluminium foil (d) dark soil
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) two small mirrors (c) an empty juice carton (d) a pencil
36. 36.True or false: a magnet is needed for the periscope. (a) True (b) False
37. 37.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
38. 38.True or false: still clear water reflects light well. (a) False (b) True
39. 39.True or false: a dull brick reflects light poorly. (a) False (b) True
40. 40.🔭 How many times does light bounce off a mirror in a simple periscope?

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