Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 313 · 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 of these reflects light well? (a) black cloth (b) dark soil (c) a shiny steel plate (d) a dull brick
2. 2.🔭 Which of these reflects light poorly? (a) black cloth (b) still clear water (c) a mirror (d) a shiny steel plate
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
4. 4.🧺 Which of these is needed for the periscope? (a) a ruler (b) turmeric powder (c) a battery cell (d) a magnet
5. 5.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) a wall (d) the Sun
6. 6.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) still clear water (d) a rough wooden board
7. 7.⚖️ 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 measure it (c) we keep it the same
8. 8.True or false: a balloon is needed for the periscope. (a) False (b) True
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) an empty juice carton (c) sticky tape (d) a pencil
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a balloon (d) sticky tape
11. 11.True or false: a pencil is needed for the periscope. (a) False (b) True
12. 12.⚖️ 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 same mirrors (d) the object we look at
13. 13.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
14. 14.True or false: a pencil is not needed for the periscope. (a) False (b) True
15. 15.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) a ruler (d) a magnet
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) still clear water (d) a mirror
18. 18.⚖️ 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 object we look at (c) the same light (d) the same mirrors
19. 19.True or false: a battery cell is needed for the periscope. (a) True (b) False
20. 20.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
21. 21.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
22. 22.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
23. 23.True or false: a rough wooden board reflects light well. (a) True (b) False
24. 24.⚖️ 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
25. 25.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) broken glass bits (d) loose glass panes
26. 26.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
27. 27.🔭 How many times does light bounce off a mirror in a simple periscope?
28. 28.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a rough wooden board (d) a mirror
29. 29.⚖️ 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) False (b) True
30. 30.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) only darkness (d) a rainbow
31. 31.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) only short walls (d) the ground
32. 32.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a rough wooden board (c) still clear water (d) aluminium foil
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) two small mirrors (c) a pencil (d) an empty juice carton
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) two small mirrors (d) a magnet
35. 35.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) magnetism (d) refraction
36. 36.🔭 How many mirrors does a simple periscope use?
37. 37.⚖️ 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 keep it the same (c) we change it
38. 38.🧺 Which of these is needed for the periscope? (a) vinegar (b) a pencil (c) a magnet (d) turmeric powder
39. 39.⚖️ 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
40. 40.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well

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