Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 586 · 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) a pencil (b) turmeric powder (c) sticky tape (d) an empty juice carton
2. 2.True or false: a dull brick reflects light poorly. (a) True (b) False
3. 3.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) upside down only (d) in colour
4. 4.🔭 Which of these reflects light well? (a) a dull brick (b) aluminium foil (c) black cloth (d) a rough wooden board
5. 5.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a farmer (d) a submarine crew
6. 6.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) reflection (d) evaporation
7. 7.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a battery cell (c) a pencil (d) two small mirrors
8. 8.🔭 Which of these reflects light well? (a) still clear water (b) black cloth (c) a dull brick (d) a rough wooden board
9. 9.True or false: a rough wooden board reflects light well. (a) False (b) True
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) True (b) False
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a ruler (c) two small mirrors (d) sticky tape
13. 13.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
14. 14.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) only short walls (d) nothing at all
15. 15.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) a rough wooden board (d) black cloth
16. 16.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a tree (d) a wall
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 change it (c) we measure it
18. 18.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.True or false: a shiny steel plate reflects light well. (a) False (b) True
20. 20.True or false: black cloth reflects light poorly. (a) False (b) True
21. 21.⚖️ 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 keep it the same (b) we change it (c) we measure it
22. 22.🔭 Which of these reflects light well? (a) a shiny steel plate (b) black cloth (c) a dull brick (d) a rough wooden board
23. 23.True or false: dark soil reflects light poorly. (a) False (b) True
24. 24.🧺 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
25. 25.🔭 How many mirrors does a simple periscope use?
26. 26.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) aluminium foil (d) a mirror
27. 27.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) plastic safety mirrors (d) loose glass panes
28. 28.True or false: a balloon is not needed for the periscope. (a) False (b) True
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same carton (c) the same mirrors (d) the object we look at
30. 30.⚖️ 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
31. 31.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
32. 32.True or false: a magnet is not needed for the periscope. (a) True (b) False
33. 33.⚖️ 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 keep it the same (b) we change it (c) we measure it
34. 34.🔭 How many times does light bounce off a mirror in a simple periscope?
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) sticky tape (d) a balloon
36. 36.⚖️ 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 carton (c) the same mirrors (d) the object we look at
37. 37.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 10 degrees (c) 180 degrees (d) 90 degrees
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a ruler (d) yeast
39. 39.🧺 Which of these is not needed for the periscope? (a) vinegar (b) two small mirrors (c) a pencil (d) a ruler
40. 40.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) still clear water (d) a mirror

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