Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 810 · 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.True or false: a dull brick reflects light well. (a) False (b) True
2. 2.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
3. 3.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) dark soil (d) still clear water
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a pencil (d) a balloon
5. 5.⚖️ 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 same carton (c) the angle of the mirrors (d) the same light
6. 6.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a tree (d) a friend’s toy
7. 7.⚖️ 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 measure it (c) we change it
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) vinegar (d) an empty juice carton
9. 9.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall
10. 10.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.🔭 Which of these reflects light well? (a) a mirror (b) black cloth (c) dark soil (d) a rough wooden board
12. 12.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) a magnet (d) two small mirrors
13. 13.🛟 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
14. 14.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
15. 15.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
16. 16.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) a shiny steel plate (d) a mirror
17. 17.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) so it looks shiny (d) to make it heavy
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) how clear the view is (c) the angle of the mirrors
19. 19.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a magnet (c) a battery cell (d) turmeric powder
20. 20.🔭 How many mirrors does a simple periscope use?
21. 21.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.True or false: sticky tape is not needed for the periscope. (a) False (b) True
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) how clear the view is (c) the angle of the mirrors
27. 27.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) a pencil (d) a battery cell
28. 28.⚖️ 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
29. 29.⚖️ 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 measure it (b) we change it (c) we keep it the same
30. 30.🔭 How many times does light bounce off a mirror in a simple periscope?
31. 31.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) dark soil (d) a shiny steel plate
32. 32.⚖️ 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 change it (c) we keep it the same
33. 33.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) black cloth (d) still clear water
34. 34.True or false: yeast is needed for the periscope. (a) True (b) False
35. 35.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
36. 36.🧺 Which of these is needed for the periscope? (a) a battery cell (b) turmeric powder (c) an empty juice carton (d) vinegar
37. 37.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
38. 38.True or false: black cloth reflects light well. (a) True (b) False
39. 39.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a magnet (c) a battery cell (d) turmeric powder
40. 40.True or false: yeast is not needed for the periscope. (a) False (b) True

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