Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 926 · 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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) True (b) False
2. 2.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
3. 3.🔮 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
4. 4.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) a magnet
5. 5.⚖️ 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 change it (c) we measure it
6. 6.True or false: two small mirrors is needed for the periscope. (a) False (b) True
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a balloon (c) two small mirrors (d) sticky tape
8. 8.True or false: aluminium foil reflects light poorly. (a) True (b) False
9. 9.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) taller walls (d) only short walls
10. 10.🧺 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
11. 11.True or false: a shiny steel plate reflects light well. (a) True (b) False
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a pencil (d) vinegar
13. 13.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) reflection (d) evaporation
14. 14.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
15. 15.⚖️ 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 keep it the same (c) we measure it
16. 16.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a battery cell (c) two small mirrors (d) a pencil
18. 18.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) still clear water (d) black cloth
19. 19.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
20. 20.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
21. 21.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) a balloon (d) two small mirrors
22. 22.🔭 Which of these reflects light well? (a) black cloth (b) a mirror (c) a dull brick (d) dark soil
23. 23.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) black cloth (d) still clear water
24. 24.🔭 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
25. 25.True or false: a rough wooden board reflects light poorly. (a) False (b) True
26. 26.⚖️ 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 angle of the mirrors (c) the same light
27. 27.True or false: sticky tape is needed for the periscope. (a) True (b) False
28. 28.True or false: still clear water reflects light poorly. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) dark soil (d) black cloth
30. 30.⚖️ 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) True (b) False
31. 31.🔭 How many times does light bounce off a mirror in a simple periscope?
32. 32.⚖️ 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 change it (c) we measure it
33. 33.⚖️ 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
34. 34.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
35. 35.🔭 How many mirrors does a simple periscope use?
36. 36.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) an empty juice carton (d) yeast
37. 37.True or false: vinegar is not needed for the periscope. (a) True (b) False
38. 38.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) big wall mirrors (d) loose glass panes
39. 39.⚖️ 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
40. 40.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) still clear water (d) a rough wooden board

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