Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 535 · 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.🔭 How many mirrors does a simple periscope use?
2. 2.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) much bigger (d) flipped left to right
3. 3.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) dark soil (d) aluminium foil
4. 4.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
5. 5.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) a shiny steel plate (d) a mirror
6. 6.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
7. 7.⚖️ 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) True (b) False
8. 8.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) reflection (d) refraction
9. 9.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
10. 10.🔍 Which is the odd one out? (a) aluminium foil (b) dark soil (c) a shiny steel plate (d) a mirror
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) vinegar (c) sticky tape (d) two small mirrors
12. 12.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a rough wooden board (c) dark soil (d) black cloth
13. 13.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) only darkness (d) two pictures
14. 14.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) a dull brick (d) dark soil
15. 15.🔭 How many times does light bounce off a mirror in a simple periscope?
16. 16.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) dark soil (d) a rough wooden board
17. 17.⚖️ 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 measure it (b) we change it (c) we keep it the same
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
19. 19.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so it looks shiny (d) so light reaches the eye
20. 20.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a dull brick (d) a mirror
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) False (b) True
22. 22.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
23. 23.🧺 Which of these is not needed for the periscope? (a) a magnet (b) an empty juice carton (c) a ruler (d) sticky tape
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) an empty juice carton (c) sticky tape (d) two small mirrors
25. 25.⚖️ 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
26. 26.True or false: a shiny steel plate reflects light well. (a) True (b) False
27. 27.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
28. 28.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) aluminium foil (d) a mirror
29. 29.True or false: still clear water reflects light poorly. (a) True (b) False
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) an empty juice carton (d) turmeric powder
31. 31.True or false: dark soil reflects light well. (a) False (b) True
32. 32.⚖️ 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
33. 33.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees
34. 34.True or false: black cloth reflects light well. (a) True (b) False
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the object we look at (c) the same carton (d) how clear the view is
36. 36.True or false: a balloon is needed for the periscope. (a) False (b) True
37. 37.⚖️ 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) True (b) False
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
39. 39.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a submarine crew (d) a pilot in a plane
40. 40.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) yeast (d) two small mirrors

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