Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 877 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a magnet (c) two small mirrors (d) a pencil
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) the ground (d) nothing at all
4. 4.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) upside down only (d) much bigger
5. 5.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
6. 6.🔭 How many times does light bounce off a mirror in a simple periscope?
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a balloon (c) sticky tape (d) an empty juice carton
8. 8.⚖️ 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 mirrors (b) the angle of the mirrors (c) how clear the view is (d) the same carton
9. 9.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a mirror (d) a rough wooden board
10. 10.🔭 Which of these reflects light poorly? (a) dark soil (b) aluminium foil (c) still clear water (d) a mirror
11. 11.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) still clear water (d) a shiny steel plate
12. 12.⚖️ 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
13. 13.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
14. 14.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) a brighter view (d) only darkness
15. 15.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 10 degrees (c) 90 degrees (d) 180 degrees
16. 16.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) refraction (d) magnetism
17. 17.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
18. 18.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) loose glass panes (d) plastic safety mirrors
19. 19.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
20. 20.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) an empty juice carton (d) a balloon
21. 21.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a dull brick (d) a mirror
22. 22.True or false: a ruler is not needed for the periscope. (a) False (b) True
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we keep it the same (c) we measure it
24. 24.🧺 Which of these is needed for the periscope? (a) a ruler (b) turmeric powder (c) a battery cell (d) yeast
25. 25.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) dark soil
26. 26.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.🧺 Which of these is not needed for the periscope? (a) vinegar (b) a ruler (c) sticky tape (d) an empty juice carton
28. 28.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
29. 29.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
30. 30.True or false: a pencil is not needed for the periscope. (a) False (b) True
31. 31.True or false: dark soil reflects light poorly. (a) False (b) True
32. 32.True or false: a battery cell is needed for the periscope. (a) False (b) True
33. 33.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) dark soil (d) a mirror
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors
35. 35.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it looks shiny (c) so light reaches the eye (d) so it can float
36. 36.True or false: a dull brick reflects light poorly. (a) False (b) True
37. 37.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
39. 39.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a friend’s toy (d) a wall
40. 40.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly

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