Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 967 · 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.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
3. 3.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) a dull brick (d) a mirror
4. 4.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
5. 5.🧺 Which of these is needed for the periscope? (a) a magnet (b) a balloon (c) vinegar (d) sticky tape
6. 6.🔭 Which of these reflects light poorly? (a) black cloth (b) aluminium foil (c) still clear water (d) a mirror
7. 7.⚖️ 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
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) vinegar (c) sticky tape (d) an empty juice carton
9. 9.🔭 How many mirrors does a simple periscope use?
10. 10.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
12. 12.True or false: a balloon is not needed for the periscope. (a) False (b) True
13. 13.⚖️ 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) the angle of the mirrors (c) how clear the view is (d) the same light
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same carton (b) the same light (c) the angle of the mirrors (d) the same mirrors
15. 15.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
16. 16.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
17. 17.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a balloon (c) a magnet (d) a battery cell
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
21. 21.🔭 How many times does light bounce off a mirror in a simple periscope?
22. 22.🔮 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
23. 23.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) so it looks shiny (d) to make it heavy
24. 24.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) reflection (d) refraction
25. 25.True or false: a battery cell is needed for the periscope. (a) True (b) False
26. 26.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
27. 27.🔭 Which of these reflects light well? (a) a dull brick (b) still clear water (c) dark soil (d) black cloth
28. 28.True or false: turmeric powder is needed for the periscope. (a) False (b) True
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) a rough wooden board (d) a shiny steel plate
31. 31.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
32. 32.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a dull brick (d) a mirror
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 measure it (b) we change it (c) we keep it the same
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) a battery cell
36. 36.True or false: a magnet is needed for the periscope. (a) False (b) True
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) an empty juice carton (c) sticky tape (d) a pencil
38. 38.True or false: aluminium foil reflects light poorly. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) a rough wooden board (d) still clear water
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a ruler (c) an empty juice carton (d) a pencil

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