Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 213 · 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.🔭 How many times does light bounce off a mirror in a simple periscope?
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
3. 3.True or false: a rough wooden board reflects light well. (a) True (b) False
4. 4.True or false: a shiny steel plate reflects light well. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) a shiny steel plate (b) dark soil (c) a rough wooden board (d) black cloth
6. 6.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) a brighter view (d) only darkness
7. 7.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
8. 8.🔭 How many mirrors does a simple periscope use?
9. 9.True or false: yeast is needed for the periscope. (a) True (b) False
10. 10.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) broken glass bits (d) plastic safety mirrors
11. 11.⚖️ 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 light (c) the angle of the mirrors
12. 12.⚖️ 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 keep it the same (c) we change it
13. 13.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) vinegar
15. 15.🧺 Which of these is needed for the periscope? (a) a magnet (b) a balloon (c) a battery cell (d) an empty juice carton
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) an empty juice carton (d) two small mirrors
17. 17.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) a pencil (d) a battery cell
18. 18.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same light (c) the same carton (d) the same mirrors
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a balloon (d) a ruler
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
22. 22.🧺 Which of these is needed for the periscope? (a) yeast (b) turmeric powder (c) a battery cell (d) two small mirrors
23. 23.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) a mirror (d) black cloth
24. 24.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) a wall (d) the Sun
25. 25.🔮 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
26. 26.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a rough wooden board (d) still clear water
27. 27.🔍 Which is the odd one out? (a) black cloth (b) aluminium foil (c) dark soil (d) a rough wooden board
28. 28.True or false: a balloon is not needed for the periscope. (a) False (b) True
29. 29.True or false: black cloth reflects light poorly. (a) False (b) True
30. 30.⚖️ 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) True (b) False
31. 31.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) taller walls (d) nothing at all
32. 32.⚖️ 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 measure it (b) we change it (c) we keep it the same
33. 33.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
34. 34.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
36. 36.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
39. 39.True or false: a battery cell is not needed for the periscope. (a) True (b) False
40. 40.True or false: a ruler is needed for the periscope. (a) False (b) True

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