Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 410 · 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.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 10 degrees (d) 180 degrees
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the object we look at (c) the same mirrors (d) the angle of the mirrors
3. 3.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
4. 4.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) a dull brick (d) a shiny steel plate
5. 5.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
6. 6.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see over a wall (d) see germs
7. 7.⚖️ 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 change it (b) we measure it (c) we keep it the same
8. 8.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
9. 9.🔭 How many mirrors does a simple periscope use?
10. 10.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
11. 11.True or false: a mirror reflects light well. (a) False (b) True
12. 12.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a baker (d) a farmer
13. 13.True or false: black cloth reflects light well. (a) True (b) False
14. 14.🧺 Which of these is needed for the periscope? (a) yeast (b) two small mirrors (c) a balloon (d) turmeric powder
15. 15.True or false: a ruler is needed for the periscope. (a) False (b) True
16. 16.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) vinegar (d) an empty juice carton
17. 17.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) turmeric powder (c) sticky tape (d) two small mirrors
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the angle of the mirrors (c) the object we look at (d) how clear the view is
19. 19.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) a brighter view (d) two pictures
20. 20.True or false: a shiny steel plate reflects light well. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) a rough wooden board (d) aluminium foil
22. 22.True or false: dark soil reflects light well. (a) False (b) True
23. 23.True or false: turmeric powder is needed for the periscope. (a) True (b) False
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) True (b) False
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) an empty juice carton (d) a battery cell
26. 26.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) upside down only (d) in colour
27. 27.⚖️ 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 measure it (c) we change it
28. 28.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
29. 29.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) a pencil (d) yeast
30. 30.🧺 Which of these is not needed for the periscope? (a) a magnet (b) a ruler (c) sticky tape (d) an empty juice carton
31. 31.⚖️ 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
32. 32.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) sticky tape (d) a balloon
33. 33.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) dark soil (d) a rough wooden board
34. 34.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a battery cell (c) vinegar (d) turmeric powder
35. 35.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) evaporation (d) refraction
36. 36.🔭 Which of these reflects light well? (a) a dull brick (b) aluminium foil (c) dark soil (d) a rough wooden board
37. 37.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) a dull brick
38. 38.True or false: a pencil is needed for the periscope. (a) True (b) False
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a ruler (d) vinegar
40. 40.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed

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