Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 355 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) a battery cell (d) an empty juice carton
2. 2.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
3. 3.True or false: black cloth reflects light poorly. (a) False (b) True
4. 4.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) an empty juice carton (d) a battery cell
5. 5.⚖️ 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 keep it the same (b) we change it (c) we measure it
6. 6.True or false: a pencil is needed for the periscope. (a) False (b) True
7. 7.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) two pictures (d) a brighter view
8. 8.🧺 Which of these is not needed for the periscope? (a) a magnet (b) sticky tape (c) a pencil (d) two small mirrors
9. 9.🔭 How many mirrors does a simple periscope use?
10. 10.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 10 degrees (d) 180 degrees
11. 11.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) the angle of the mirrors (c) how clear the view is
13. 13.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) upside down only (c) in colour (d) much bigger
14. 14.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a rough wooden board (d) a mirror
15. 15.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
16. 16.True or false: a shiny steel plate reflects light well. (a) False (b) True
17. 17.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) aluminium foil (c) a mirror (d) a shiny steel plate
18. 18.True or false: a magnet is needed for the periscope. (a) False (b) True
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) how clear the view is (c) the object we look at (d) the same carton
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) vinegar (d) two small mirrors
22. 22.True or false: a balloon is needed for the periscope. (a) False (b) True
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a magnet (c) a ruler (d) an empty juice carton
24. 24.True or false: a dull brick reflects light poorly. (a) False (b) True
25. 25.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
26. 26.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a pencil (c) yeast (d) turmeric powder
27. 27.🔭 Which of these reflects light well? (a) black cloth (b) a shiny steel plate (c) a rough wooden board (d) dark soil
28. 28.⚖️ 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 same carton (c) the angle of the mirrors
29. 29.🔭 How many times does light bounce off a mirror in a simple periscope?
30. 30.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) a dull brick (d) aluminium foil
31. 31.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) see in the dark (d) hear far sounds
32. 32.⚖️ 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) True (b) False
33. 33.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) an empty juice carton (d) a balloon
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) a ruler (d) an empty juice carton
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) sticky tape (d) a balloon
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) yeast (d) an empty juice carton
37. 37.True or false: vinegar is needed for the periscope. (a) False (b) True
38. 38.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) vinegar (c) a ruler (d) a pencil
40. 40.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True

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