Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 189 · 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 well? (a) black cloth (b) a rough wooden board (c) a dull brick (d) still clear water
2. 2.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a dull brick (d) a shiny steel plate
4. 4.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) a shiny steel plate (d) a rough wooden board
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.True or false: a rough wooden board reflects light well. (a) False (b) True
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a baker (d) a submarine crew
9. 9.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
10. 10.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) in colour (d) upside down only
11. 11.True or false: a shiny steel plate reflects light well. (a) False (b) True
12. 12.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
13. 13.⚖️ 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 angle of the mirrors (c) the same mirrors (d) the same carton
14. 14.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) dark soil (c) aluminium foil (d) a mirror
15. 15.🔭 How many mirrors does a simple periscope use?
16. 16.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) nothing at all (d) only short walls
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
19. 19.True or false: sticky tape is not needed for the periscope. (a) False (b) True
20. 20.⚖️ 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
21. 21.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) a balloon (d) a ruler
22. 22.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
23. 23.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
24. 24.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) so light reaches the eye (d) to make it heavy
25. 25.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) a dull brick (d) a mirror
26. 26.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a shiny steel plate (d) dark soil
29. 29.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a battery cell (c) two small mirrors (d) an empty juice carton
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.🧺 Which of these is needed for the periscope? (a) a ruler (b) a battery cell (c) vinegar (d) a magnet
32. 32.🧺 Which of these is needed for the periscope? (a) a balloon (b) two small mirrors (c) vinegar (d) yeast
33. 33.⚖️ 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
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same light (c) the object we look at (d) the same mirrors
35. 35.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see germs (d) see over a wall
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a balloon (c) sticky tape (d) an empty juice carton
37. 37.⚖️ 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
38. 38.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) a brighter view (d) two pictures
39. 39.🛟 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
40. 40.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) a friend’s toy (d) the Sun

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