Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 170 · 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? Which of these is what we measure? (a) how clear the view is (b) the same light (c) the same carton (d) the same mirrors
2. 2.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) two small mirrors (d) vinegar
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) False (b) True
4. 4.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
5. 5.⚖️ 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 measure it (b) we keep it the same (c) we change it
6. 6.True or false: sticky tape is not needed for the periscope. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) a shiny steel plate (d) dark soil
8. 8.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) still clear water (d) a rough wooden board
9. 9.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) a mirror (d) a rough wooden board
10. 10.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 90 degrees (d) 180 degrees
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a balloon (c) an empty juice carton (d) sticky tape
12. 12.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a mirror (d) black cloth
13. 13.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a mirror (d) dark soil
14. 14.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see germs (d) see over a wall
15. 15.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) two pictures (d) only darkness
16. 16.⚖️ 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 keep it the same (c) we measure it
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) two small mirrors (d) turmeric powder
18. 18.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) still clear water (d) dark soil
19. 19.🧺 Which of these is needed for the periscope? (a) a pencil (b) a balloon (c) a magnet (d) yeast
20. 20.🔭 How many mirrors does a simple periscope use?
21. 21.True or false: dark soil reflects light poorly. (a) False (b) True
22. 22.True or false: two small mirrors is needed for the periscope. (a) True (b) False
23. 23.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) upside down only (d) flipped left to right
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 is needed for the periscope? (a) a magnet (b) yeast (c) a balloon (d) sticky tape
26. 26.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.⚖️ 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 same carton
28. 28.True or false: yeast is needed for the periscope. (a) False (b) True
29. 29.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) still clear water (d) a rough wooden board
30. 30.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
31. 31.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
32. 32.True or false: turmeric powder is needed for the periscope. (a) False (b) True
33. 33.True or false: a shiny steel plate reflects light well. (a) True (b) False
34. 34.True or false: a dull brick reflects light well. (a) True (b) False
35. 35.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
37. 37.🔭 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
38. 38.🧺 Which of these is not needed for the periscope? (a) a balloon (b) two small mirrors (c) an empty juice carton (d) a pencil
39. 39.True or false: still clear water reflects light poorly. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) black cloth (d) dark soil

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