Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 860 · 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 is needed for the periscope? (a) a battery cell (b) yeast (c) a balloon (d) sticky tape
2. 2.🔭 Which of these reflects light poorly? (a) still clear water (b) black cloth (c) a mirror (d) a shiny steel plate
3. 3.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a magnet (d) a ruler
5. 5.True or false: sticky tape is not needed for the periscope. (a) False (b) True
6. 6.True or false: a magnet is needed for the periscope. (a) True (b) False
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) a battery cell (d) sticky tape
8. 8.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) dark soil (d) aluminium foil
9. 9.🔭 How many mirrors does a simple periscope use?
10. 10.True or false: a pencil is needed for the periscope. (a) False (b) True
11. 11.🔭 How many times does light bounce off a mirror in a simple periscope?
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 measure it (b) we change it (c) we keep it the same
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same carton (b) the angle of the mirrors (c) the object we look at (d) the same light
14. 14.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) an empty juice carton (d) a battery cell
15. 15.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
18. 18.⚖️ 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 measure it (b) we keep it the same (c) we change it
19. 19.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) the ground (d) only short walls
20. 20.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
21. 21.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
22. 22.⚖️ 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 mirrors (c) how clear the view is
23. 23.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) a ruler (d) turmeric powder
24. 24.True or false: a dull brick reflects light well. (a) True (b) False
25. 25.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
26. 26.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
27. 27.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) two pictures (d) a brighter view
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a ruler (c) two small mirrors (d) sticky tape
29. 29.True or false: yeast is not needed for the periscope. (a) False (b) True
30. 30.True or false: still clear water reflects light poorly. (a) False (b) True
31. 31.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a ruler (d) turmeric powder
33. 33.⚖️ 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) how clear the view is (c) the object we look at (d) the same mirrors
34. 34.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
35. 35.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) a mirror (d) a dull brick
36. 36.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
37. 37.⚖️ 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 light (c) how clear the view is
38. 38.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
39. 39.🔍 Which is the odd one out? (a) aluminium foil (b) a rough wooden board (c) still clear water (d) a mirror
40. 40.🧺 Which of these is needed for the periscope? (a) a ruler (b) a battery cell (c) a balloon (d) turmeric powder

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