Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 485 · 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.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
2. 2.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a rough wooden board (d) aluminium foil
3. 3.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) a magnet
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the object we look at (c) the angle of the mirrors (d) the same carton
5. 5.⚖️ 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) how clear the view is (c) the same light
6. 6.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
7. 7.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) in colour (d) flipped left to right
8. 8.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a dull brick (d) still clear water
9. 9.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) dark soil (d) aluminium foil
10. 10.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) sticky tape (c) a balloon (d) yeast
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
12. 12.🔭 How many mirrors does a simple periscope use?
13. 13.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
14. 14.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
15. 15.⚖️ 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
16. 16.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
17. 17.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
19. 19.⚖️ 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
20. 20.🔮 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
21. 21.🧺 Which of these is needed for the periscope? (a) a magnet (b) a pencil (c) turmeric powder (d) a balloon
22. 22.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) a balloon (d) an empty juice carton
23. 23.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a balloon (c) vinegar (d) a battery cell
24. 24.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a rough wooden board (d) a mirror
25. 25.🔭 How many times does light bounce off a mirror in a simple periscope?
26. 26.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) two small mirrors (d) a magnet
27. 27.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) sticky tape (d) turmeric powder
29. 29.⚖️ 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 keep it the same (b) we measure it (c) we change it
30. 30.True or false: turmeric powder is needed for the periscope. (a) False (b) True
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) two small mirrors (d) a ruler
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) an empty juice carton (d) a balloon
33. 33.⚖️ 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 measure it (c) we change it
34. 34.🔭 Which of these reflects light well? (a) dark soil (b) a shiny steel plate (c) a dull brick (d) a rough wooden board
35. 35.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
36. 36.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) plastic safety mirrors (d) big wall mirrors
37. 37.True or false: yeast is needed for the periscope. (a) False (b) True
38. 38.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) yeast (d) a ruler
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a battery cell (d) an empty juice carton
40. 40.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running

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