Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 102 · 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) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
2. 2.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a battery cell (c) a ruler (d) two small mirrors
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) sticky tape (d) a balloon
4. 4.⚖️ 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
5. 5.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
6. 6.⚖️ 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 same light
7. 7.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) aluminium foil (d) a shiny steel plate
8. 8.True or false: a balloon is needed for the periscope. (a) True (b) False
9. 9.⚖️ 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
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) an empty juice carton (d) a battery cell
11. 11.⚖️ 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
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) sticky tape (d) vinegar
13. 13.True or false: a ruler is needed for the periscope. (a) True (b) False
14. 14.🔭 How many mirrors does a simple periscope use?
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a submarine crew (d) a pilot in a plane
17. 17.True or false: aluminium foil reflects light poorly. (a) False (b) True
18. 18.⚖️ 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) the same light (d) how clear the view is
19. 19.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
20. 20.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a mirror (d) dark soil
21. 21.True or false: a ruler is not needed for the periscope. (a) False (b) True
22. 22.True or false: a shiny steel plate reflects light well. (a) False (b) True
23. 23.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.⚖️ 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 object we look at
25. 25.True or false: a dull brick reflects light poorly. (a) False (b) True
26. 26.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a dull brick (c) a shiny steel plate (d) still clear water
27. 27.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) to make it heavy (d) so it looks shiny
29. 29.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) a brighter view (d) only darkness
30. 30.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) the Sun (d) a tree
31. 31.⚖️ 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
32. 32.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) a rough wooden board (d) aluminium foil
33. 33.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
35. 35.True or false: turmeric powder is needed for the periscope. (a) False (b) True
36. 36.⚖️ 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 measure it (b) we keep it the same (c) we change it
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
38. 38.True or false: dark soil reflects light well. (a) True (b) False
39. 39.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits

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