Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 976 · 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.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 10 degrees (d) 90 degrees
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
4. 4.🔭 Which of these reflects light poorly? (a) black cloth (b) a mirror (c) aluminium foil (d) a shiny steel plate
5. 5.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a ruler (c) a balloon (d) vinegar
7. 7.True or false: a mirror reflects light poorly. (a) False (b) True
8. 8.🔮 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
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
10. 10.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) to make it heavy (d) so it looks shiny
12. 12.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) a magnet (d) an empty juice carton
13. 13.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
14. 14.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
15. 15.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
16. 16.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a mirror (d) a dull brick
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
18. 18.⚖️ 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 change it (b) we measure it (c) we keep it the same
19. 19.True or false: a shiny steel plate reflects light well. (a) False (b) True
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) two small mirrors (c) an empty juice carton (d) a ruler
21. 21.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a brighter view (d) a rainbow
22. 22.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) upside down only (d) in colour
23. 23.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) dark soil (d) still clear water
24. 24.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
25. 25.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.⚖️ 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
27. 27.⚖️ 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 angle of the mirrors (c) the object we look at
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the same mirrors (c) how clear the view is (d) the angle of the mirrors
29. 29.⚖️ 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
30. 30.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) loose glass panes (d) plastic safety mirrors
31. 31.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) vinegar (c) a pencil (d) sticky tape
33. 33.True or false: dark soil reflects light well. (a) True (b) False
34. 34.⚖️ 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 change it (b) we keep it the same (c) we measure it
35. 35.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
36. 36.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) a magnet (d) two small mirrors
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors
38. 38.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.True or false: a rough wooden board reflects light well. (a) False (b) True
40. 40.True or false: a magnet is needed for the periscope. (a) False (b) True

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