Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 56 · 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.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
2. 2.True or false: two small mirrors is needed for the periscope. (a) False (b) True
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) two small mirrors (c) sticky tape (d) an empty juice carton
4. 4.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
5. 5.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) a shiny steel plate (b) a rough wooden board (c) a mirror (d) aluminium foil
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a pencil (d) a balloon
9. 9.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) a dull brick (d) still clear water
10. 10.⚖️ 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
11. 11.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a farmer (c) a baker (d) a pilot in a plane
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) yeast (d) an empty juice carton
13. 13.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
14. 14.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) the ground (d) only short walls
15. 15.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) black cloth (d) a shiny steel plate
16. 16.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) black cloth (d) still clear water
17. 17.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) in colour (d) much bigger
18. 18.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) a rough wooden board (d) black cloth
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.True or false: vinegar is needed for the periscope. (a) False (b) True
21. 21.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) evaporation (d) reflection
22. 22.🔭 How many mirrors does a simple periscope use?
23. 23.🧺 Which of these is needed for the periscope? (a) a balloon (b) a ruler (c) vinegar (d) turmeric powder
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) two small mirrors (c) a pencil (d) an empty juice carton
25. 25.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
26. 26.⚖️ 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
27. 27.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
28. 28.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) an empty juice carton (d) yeast
29. 29.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
30. 30.True or false: a dull brick reflects light well. (a) True (b) False
31. 31.True or false: a rough wooden board reflects light well. (a) True (b) False
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) how clear the view is (c) the same light (d) the same carton
33. 33.⚖️ 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
34. 34.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
35. 35.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
36. 36.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the same mirrors (c) how clear the view is
38. 38.⚖️ 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) True (b) False
39. 39.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) a rough wooden board (d) a mirror
40. 40.True or false: a shiny steel plate reflects light poorly. (a) True (b) False

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