Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 806 · 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 is needed for the periscope? (a) a battery cell (b) two small mirrors (c) a magnet (d) turmeric powder
2. 2.⚖️ 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
3. 3.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) taller walls (d) only short walls
4. 4.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
5. 5.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
6. 6.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) a rough wooden board (d) a shiny steel plate
7. 7.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 10 degrees (c) 180 degrees (d) 90 degrees
8. 8.True or false: a magnet is not needed for the periscope. (a) False (b) True
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) dark soil (d) still clear water
11. 11.⚖️ 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
12. 12.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
13. 13.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) a battery cell (d) an empty juice carton
14. 14.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a mirror (d) dark soil
15. 15.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
16. 16.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) in colour (d) upside down only
17. 17.True or false: a balloon is not needed for the periscope. (a) True (b) False
18. 18.True or false: a pencil is not needed for the periscope. (a) True (b) False
19. 19.True or false: yeast is needed for the periscope. (a) False (b) True
20. 20.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) big wall mirrors (d) broken glass bits
21. 21.⚖️ 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
22. 22.🔭 How many mirrors does a simple periscope use?
23. 23.True or false: dark soil reflects light poorly. (a) True (b) False
24. 24.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
25. 25.True or false: a pencil is needed for the periscope. (a) True (b) False
26. 26.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) magnetism (d) refraction
27. 27.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a balloon (d) an empty juice carton
29. 29.⚖️ 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
30. 30.🔍 Which is the odd one out? (a) still clear water (b) a dull brick (c) a shiny steel plate (d) a mirror
31. 31.⚖️ 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
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) an empty juice carton (d) yeast
33. 33.True or false: a magnet is needed for the periscope. (a) True (b) False
34. 34.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) black cloth (d) still clear water
35. 35.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a submarine crew (d) a baker
36. 36.🔭 How many times does light bounce off a mirror in a simple periscope?
37. 37.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) dark soil (d) a rough wooden board
38. 38.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
39. 39.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
40. 40.True or false: a ruler is needed for the periscope. (a) False (b) True

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