Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 762 · 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 of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) black cloth
2. 2.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) two pictures (d) only darkness
3. 3.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a magnet (c) a balloon (d) vinegar
4. 4.⚖️ 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
5. 5.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.⚖️ 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
8. 8.⚖️ 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) True (b) False
9. 9.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) a mirror (d) a shiny steel plate
10. 10.🧺 Which of these is needed for the periscope? (a) a balloon (b) sticky tape (c) yeast (d) vinegar
11. 11.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) much bigger (d) upside down only
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.⚖️ 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 change it (b) we measure it (c) we keep it the same
14. 14.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
15. 15.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
16. 16.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) a dull brick
18. 18.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) a tree (d) the Sun
19. 19.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 10 degrees (c) 180 degrees (d) 90 degrees
20. 20.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) dark soil (d) a mirror
21. 21.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) a rough wooden board (d) a shiny steel plate
22. 22.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
23. 23.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) sticky tape (d) a magnet
24. 24.🔭 How many times does light bounce off a mirror in a simple periscope?
25. 25.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see in the dark (d) see germs
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 keep it the same (b) we change it (c) we measure it
27. 27.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) refraction (d) magnetism
28. 28.🔭 Which of these reflects light well? (a) a rough wooden board (b) a mirror (c) a dull brick (d) dark soil
29. 29.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
30. 30.⚖️ 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
31. 31.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
32. 32.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
33. 33.True or false: a mirror reflects light well. (a) True (b) False
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) sticky tape (d) a balloon
35. 35.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
36. 36.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) the ground (d) nothing at all
37. 37.🧺 Which of these is needed for the periscope? (a) yeast (b) a battery cell (c) two small mirrors (d) a balloon
38. 38.True or false: black cloth reflects light poorly. (a) False (b) True
39. 39.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) a ruler (d) turmeric powder

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