Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 18 · 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.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
2. 2.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.🧺 Which of these is needed for the periscope? (a) yeast (b) turmeric powder (c) two small mirrors (d) vinegar
5. 5.True or false: dark soil reflects light poorly. (a) False (b) True
6. 6.🔭 Which of these reflects light well? (a) still clear water (b) dark soil (c) a dull brick (d) a rough wooden board
7. 7.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
8. 8.True or false: a magnet is needed for the periscope. (a) False (b) True
9. 9.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a shiny steel plate (d) a dull brick
10. 10.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) dark soil (d) a shiny steel plate
11. 11.True or false: a pencil is not needed for the periscope. (a) True (b) False
12. 12.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) a balloon (d) a pencil
13. 13.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) only short walls (d) taller walls
14. 14.🔭 Which of these reflects light poorly? (a) a dull brick (b) still clear water (c) aluminium foil (d) a shiny steel plate
15. 15.⚖️ 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 keep it the same (c) we measure it
16. 16.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 180 degrees (d) 10 degrees
17. 17.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) a rough wooden board (d) still clear water
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
19. 19.🔭 Which of these reflects light well? (a) black cloth (b) a mirror (c) a rough wooden board (d) dark soil
20. 20.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) sticky tape (d) a battery cell
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a balloon (d) a pencil
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) dark soil (d) a dull brick
25. 25.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a rainbow (d) a brighter view
26. 26.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
27. 27.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a rough wooden board (d) aluminium foil
28. 28.🔮 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
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the angle of the mirrors (c) the same mirrors (d) how clear the view is
30. 30.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
31. 31.True or false: a balloon is needed for the periscope. (a) True (b) False
32. 32.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
33. 33.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a battery cell (c) sticky tape (d) an empty juice carton
34. 34.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
35. 35.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
37. 37.⚖️ 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
38. 38.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) big wall mirrors (d) broken glass bits
39. 39.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) a ruler (d) a battery cell
40. 40.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well

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