Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 227 · 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.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) dark soil (d) aluminium foil
2. 2.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
4. 4.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
5. 5.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a mirror (d) a dull brick
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.True or false: still clear water reflects light well. (a) False (b) True
9. 9.True or false: black cloth reflects light well. (a) False (b) True
10. 10.🔭 Which of these reflects light poorly? (a) dark soil (b) a shiny steel plate (c) still clear water (d) aluminium foil
11. 11.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.⚖️ 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 same carton (c) how clear the view is
14. 14.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) loose glass panes (d) big wall mirrors
15. 15.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) magnetism (d) refraction
16. 16.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a balloon (d) a pencil
18. 18.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) upside down only (d) flipped left to right
19. 19.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) a balloon (d) a ruler
21. 21.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) to make it heavy (d) so light reaches the eye
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.🔭 How many mirrors does a simple periscope use?
24. 24.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) a mirror (d) black cloth
25. 25.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) a dull brick (d) aluminium foil
26. 26.⚖️ 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
27. 27.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) a brighter view (d) only darkness
28. 28.🧺 Which of these is not needed for the periscope? (a) a magnet (b) two small mirrors (c) an empty juice carton (d) a pencil
29. 29.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
30. 30.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 180 degrees (d) 10 degrees
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a pencil (c) two small mirrors (d) sticky tape
32. 32.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a dull brick (d) a shiny steel plate
33. 33.🧺 Which of these is needed for the periscope? (a) a magnet (b) a balloon (c) a pencil (d) turmeric powder
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the same mirrors (c) the angle of the mirrors
35. 35.🔭 Which of these reflects light poorly? (a) aluminium foil (b) black cloth (c) still clear water (d) a mirror
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a ruler (c) a pencil (d) an empty juice carton
37. 37.True or false: a pencil is needed for the periscope. (a) False (b) True
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 measure it (b) we change it (c) we keep it the same
39. 39.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.True or false: a rough wooden board reflects light well. (a) True (b) False

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