Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 690 · 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.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
2. 2.⚖️ 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
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 10 degrees (d) 180 degrees
5. 5.True or false: a magnet is needed for the periscope. (a) True (b) False
6. 6.True or false: still clear water reflects light well. (a) False (b) True
7. 7.🔭 Which of these reflects light poorly? (a) a dull brick (b) still clear water (c) aluminium foil (d) a shiny steel plate
8. 8.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) still clear water (c) a shiny steel plate (d) aluminium foil
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) yeast (c) sticky tape (d) an empty juice carton
10. 10.⚖️ 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 carton (c) how clear the view is (d) the object we look at
11. 11.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
12. 12.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) still clear water (d) a dull brick
13. 13.True or false: a balloon is needed for the periscope. (a) True (b) False
14. 14.⚖️ 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
15. 15.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) a shiny steel plate (d) still clear water
16. 16.True or false: a balloon is not needed for the periscope. (a) False (b) True
17. 17.⚖️ 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
18. 18.⚖️ 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) False (b) True
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a pencil (d) a magnet
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
21. 21.⚖️ 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
22. 22.True or false: a battery cell is needed for the periscope. (a) False (b) True
23. 23.🔭 How many times does light bounce off a mirror in a simple periscope?
24. 24.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
25. 25.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
26. 26.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
27. 27.🧺 Which of these is needed for the periscope? (a) yeast (b) vinegar (c) sticky tape (d) a magnet
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a balloon (d) an empty juice carton
29. 29.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.⚖️ 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
31. 31.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) an empty juice carton (d) yeast
32. 32.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) still clear water (d) black cloth
33. 33.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.True or false: sticky tape is not needed for the periscope. (a) False (b) True
35. 35.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it looks shiny (c) so it can float (d) so light reaches the eye
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) an empty juice carton (d) turmeric powder
37. 37.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
38. 38.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) vinegar (c) an empty juice carton (d) a pencil
40. 40.📘 Light bouncing off a mirror is called ___. (a) refraction (b) reflection (c) evaporation (d) magnetism

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