Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 431 · 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.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
2. 2.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) yeast (d) a ruler
4. 4.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
5. 5.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) only darkness (d) a rainbow
6. 6.True or false: vinegar is not needed for the periscope. (a) True (b) False
7. 7.True or false: still clear water reflects light poorly. (a) False (b) True
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) vinegar (d) two small mirrors
9. 9.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) in colour (d) upside down only
10. 10.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) only short walls (d) the ground
11. 11.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
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.🔭 How many times does light bounce off a mirror in a simple periscope?
14. 14.True or false: aluminium foil reflects light well. (a) False (b) True
15. 15.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
16. 16.True or false: a battery cell is needed for the periscope. (a) True (b) False
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a pencil (d) a balloon
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) dark soil (d) aluminium foil
20. 20.🔭 Which of these reflects light poorly? (a) a dull brick (b) still clear water (c) a shiny steel plate (d) a mirror
21. 21.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
22. 22.🛟 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
23. 23.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a balloon (c) a ruler (d) an empty juice carton
24. 24.⚖️ 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) the angle of the mirrors (c) how clear the view is
25. 25.True or false: a balloon is not needed for the periscope. (a) False (b) True
26. 26.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the same mirrors (c) the angle of the mirrors (d) how clear the view is
29. 29.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
30. 30.⚖️ 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 change it (b) we keep it the same (c) we measure it
31. 31.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
32. 32.True or false: yeast is needed for the periscope. (a) False (b) True
33. 33.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
35. 35.🔭 How many mirrors does a simple periscope use?
36. 36.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a pilot in a plane (d) a baker
37. 37.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) a shiny steel plate (d) aluminium foil
38. 38.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
39. 39.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) hear far sounds (d) see over a wall

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