Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 890 · 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 times does light bounce off a mirror in a simple periscope?
2. 2.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a tree (d) a friend’s toy
3. 3.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) a dull brick (d) still clear water
4. 4.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a magnet (c) a balloon (d) yeast
5. 5.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) black cloth (d) still clear water
7. 7.🧺 Which of these is needed for the periscope? (a) a balloon (b) an empty juice carton (c) yeast (d) vinegar
8. 8.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
9. 9.⚖️ 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
10. 10.🧺 Which of these is needed for the periscope? (a) yeast (b) vinegar (c) turmeric powder (d) a ruler
11. 11.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) sticky tape (d) a balloon
12. 12.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
13. 13.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
15. 15.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) black cloth (d) still clear water
16. 16.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) aluminium foil (d) dark soil
17. 17.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) a dull brick (d) still clear water
18. 18.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) reflection (d) magnetism
19. 19.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) turmeric powder (d) sticky tape
21. 21.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
22. 22.⚖️ 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) how clear the view is (c) the object we look at
23. 23.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) in colour (d) upside down only
24. 24.🧺 Which of these is not needed for the periscope? (a) vinegar (b) an empty juice carton (c) two small mirrors (d) sticky tape
25. 25.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a rough wooden board (d) aluminium foil
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 keep it the same (b) we change it (c) we measure it
27. 27.True or false: black cloth reflects light poorly. (a) True (b) False
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
29. 29.True or false: a mirror reflects light poorly. (a) True (b) False
30. 30.⚖️ 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) True (b) False
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a battery cell (c) an empty juice carton (d) two small mirrors
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) a dull brick (d) dark soil
34. 34.⚖️ 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 measure it (c) we change it
35. 35.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a submarine crew (d) a farmer
36. 36.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) still clear water (d) a dull brick
37. 37.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
38. 38.True or false: black cloth reflects light well. (a) True (b) False
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
40. 40.True or false: a pencil is needed for the periscope. (a) False (b) True

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