Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 471 · 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 is the odd one out? (a) black cloth (b) a rough wooden board (c) a dull brick (d) still clear water
2. 2.🔭 Which of these reflects light poorly? (a) still clear water (b) black cloth (c) a mirror (d) a shiny steel plate
3. 3.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.⚖️ 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
6. 6.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 45 degrees (d) 180 degrees
7. 7.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a mirror (d) a rough wooden board
8. 8.🔭 How many times does light bounce off a mirror in a simple periscope?
9. 9.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) dark soil
10. 10.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) upside down only (d) in colour
11. 11.⚖️ 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 object we look at (c) the angle of the mirrors (d) the same light
12. 12.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
13. 13.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) dark soil (d) a dull brick
14. 14.⚖️ 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
15. 15.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) plastic safety mirrors (d) loose glass panes
16. 16.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) aluminium foil (d) a rough wooden board
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) a ruler (d) vinegar
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
19. 19.⚖️ 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 change it (b) we keep it the same (c) we measure it
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
21. 21.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see germs (d) see over a wall
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors (d) the object we look at
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a ruler (d) turmeric powder
24. 24.⚖️ 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
25. 25.True or false: a dull brick reflects light poorly. (a) True (b) False
26. 26.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) turmeric powder (d) a pencil
27. 27.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) to make it heavy (d) so light reaches the eye
28. 28.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
29. 29.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
30. 30.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a friend’s toy (d) a tree
31. 31.⚖️ 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 carton
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a ruler (c) an empty juice carton (d) a pencil
33. 33.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) black cloth (d) a mirror
35. 35.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
36. 36.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) reflection (c) evaporation (d) refraction
37. 37.🧺 Which of these is needed for the periscope? (a) yeast (b) a balloon (c) vinegar (d) two small mirrors
38. 38.True or false: yeast is not needed for the periscope. (a) False (b) True
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
40. 40.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed

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