Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 156 · 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.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) taller walls (d) only short walls
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
3. 3.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
4. 4.True or false: a rough wooden board reflects light well. (a) True (b) False
5. 5.True or false: vinegar is not needed for the periscope. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) black cloth (d) a shiny steel plate
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a magnet (d) sticky tape
8. 8.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
9. 9.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
11. 11.⚖️ 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) False (b) True
12. 12.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
13. 13.🔭 Which of these reflects light well? (a) still clear water (b) a rough wooden board (c) a dull brick (d) dark soil
14. 14.🔭 Which of these reflects light poorly? (a) aluminium foil (b) dark soil (c) a shiny steel plate (d) a mirror
15. 15.⚖️ 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
16. 16.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) to make it heavy (d) so light reaches the eye
17. 17.⚖️ 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 measure it (c) we change it
18. 18.⚖️ 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) how clear the view is (c) the angle of the mirrors
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) two small mirrors (d) turmeric powder
20. 20.⚖️ 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 keep it the same (b) we measure it (c) we change it
21. 21.🧺 Do we need sticky tape for the periscope? (a) needed (b) not 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) the same carton (c) how clear the view is
23. 23.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) flipped left to right (d) in colour
24. 24.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
25. 25.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a rough wooden board (c) still clear water (d) a mirror
26. 26.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
28. 28.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a battery cell (d) a pencil
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a pencil (d) yeast
31. 31.⚖️ 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 mirrors (c) the angle of the mirrors
32. 32.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 10 degrees (d) 180 degrees
33. 33.⚖️ 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 change it (b) we measure it (c) we keep it the same
34. 34.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
35. 35.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
36. 36.🔭 How many mirrors does a simple periscope use?
37. 37.True or false: yeast is needed for the periscope. (a) True (b) False
38. 38.True or false: a battery cell is needed for the periscope. (a) False (b) True
39. 39.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
40. 40.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a battery cell (c) vinegar (d) a magnet

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