Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 668 · 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.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
2. 2.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) an empty juice carton (d) yeast
3. 3.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
4. 4.⚖️ 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 measure it (c) we change it
5. 5.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a battery cell (c) sticky tape (d) a ruler
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) sticky tape (c) a pencil (d) two small mirrors
7. 7.True or false: a balloon is not needed for the periscope. (a) True (b) False
8. 8.True or false: a balloon is needed for the periscope. (a) True (b) False
9. 9.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a battery cell (c) turmeric powder (d) a magnet
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
11. 11.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) hear far sounds (d) see over a wall
12. 12.⚖️ 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
13. 13.True or false: a battery cell is not needed for the periscope. (a) False (b) True
14. 14.🔭 How many mirrors does a simple periscope use?
15. 15.⚖️ 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
16. 16.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
17. 17.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.True or false: sticky tape is needed for the periscope. (a) False (b) True
19. 19.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
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.True or false: vinegar is not needed for the periscope. (a) True (b) False
23. 23.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) aluminium foil (c) a shiny steel plate (d) still clear water
24. 24.🔭 Which of these reflects light poorly? (a) black cloth (b) still clear water (c) a shiny steel plate (d) a mirror
25. 25.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a shiny steel plate (d) a rough wooden board
26. 26.True or false: a rough wooden board reflects light poorly. (a) True (b) False
27. 27.True or false: a mirror reflects light well. (a) True (b) False
28. 28.True or false: dark soil reflects light well. (a) False (b) True
29. 29.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
30. 30.⚖️ 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
31. 31.⚖️ 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 keep it the same (c) we change it
32. 32.⚖️ 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
33. 33.🧺 Which of these is needed for the periscope? (a) a balloon (b) an empty juice carton (c) a magnet (d) turmeric powder
34. 34.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
35. 35.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) to make it heavy (d) so light reaches the eye
36. 36.🔮 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
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) vinegar (c) two small mirrors (d) a pencil
38. 38.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.🔭 Which of these reflects light well? (a) still clear water (b) dark soil (c) a dull brick (d) black cloth
40. 40.True or false: sticky tape is not needed for the periscope. (a) True (b) False

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