Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 270 · 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.⚖️ 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
2. 2.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
3. 3.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a magnet (c) sticky tape (d) an empty juice carton
4. 4.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a battery cell (c) a ruler (d) an empty juice carton
6. 6.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
7. 7.🔭 Which of these reflects light poorly? (a) a mirror (b) a dull brick (c) still clear water (d) a shiny steel plate
8. 8.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
9. 9.True or false: a mirror reflects light well. (a) False (b) True
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 45 degrees (d) 10 degrees
12. 12.True or false: a shiny steel plate reflects light well. (a) True (b) False
13. 13.True or false: a rough wooden board reflects light poorly. (a) False (b) True
14. 14.🔭 How many times does light bounce off a mirror in a simple periscope?
15. 15.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) vinegar (d) two small mirrors
16. 16.True or false: a mirror reflects light poorly. (a) False (b) True
17. 17.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
18. 18.🔭 How many mirrors does a simple periscope use?
19. 19.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) yeast (d) a ruler
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) a balloon (d) two small mirrors
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) vinegar (d) a ruler
22. 22.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) a mirror (d) still clear water
23. 23.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) a pencil (c) sticky tape (d) a ruler
24. 24.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a submarine crew (d) a baker
25. 25.🔭 Which of these reflects light well? (a) a rough wooden board (b) a mirror (c) a dull brick (d) black cloth
26. 26.⚖️ 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 keep it the same (b) we change it (c) we measure it
27. 27.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) to make it heavy (d) so it looks shiny
28. 28.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
30. 30.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) much bigger (d) in colour
31. 31.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) the ground (d) nothing at all
32. 32.True or false: a ruler is needed for the periscope. (a) True (b) False
33. 33.True or false: sticky tape is not needed for the periscope. (a) True (b) False
34. 34.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a mirror (c) still clear water (d) aluminium foil
35. 35.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
37. 37.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
38. 38.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.🧺 Which of these is needed for the periscope? (a) yeast (b) an empty juice carton (c) a magnet (d) a balloon
40. 40.True or false: dark soil reflects light poorly. (a) False (b) True

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