Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 754 · 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.🔭 Which of these reflects light well? (a) a shiny steel plate (b) dark soil (c) black cloth (d) a rough wooden board
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a pencil (c) a ruler (d) sticky tape
4. 4.True or false: still clear water reflects light poorly. (a) False (b) True
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 keep it the same (b) we change it (c) we measure it
6. 6.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
7. 7.True or false: two small mirrors is needed for the periscope. (a) False (b) True
8. 8.⚖️ 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 keep it the same (c) we measure it
9. 9.🔭 How many times does light bounce off a mirror in a simple periscope?
10. 10.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a rough wooden board (d) a mirror
11. 11.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) black cloth (d) aluminium foil
12. 12.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) dark soil (d) a mirror
13. 13.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) broken glass bits (d) big wall mirrors
14. 14.True or false: dark soil reflects light poorly. (a) False (b) True
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) sticky tape (d) a battery cell
16. 16.True or false: a balloon is needed for the periscope. (a) True (b) False
17. 17.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) taller walls (d) the ground
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
19. 19.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the same light (c) how clear the view is (d) the object we look at
21. 21.⚖️ 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
22. 22.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
24. 24.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
25. 25.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
26. 26.🔭 Which of these reflects light well? (a) a rough wooden board (b) still clear water (c) black cloth (d) a dull brick
27. 27.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
28. 28.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) black cloth (d) a shiny steel plate
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) sticky tape (d) a magnet
30. 30.True or false: vinegar is not needed for the periscope. (a) True (b) False
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
32. 32.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) a ruler (d) a battery cell
33. 33.True or false: a mirror reflects light poorly. (a) False (b) True
34. 34.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) dark soil (d) a mirror
35. 35.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) refraction (d) reflection
36. 36.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a farmer (d) a baker
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
38. 38.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
39. 39.⚖️ 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 carton (b) the object we look at (c) the angle of the mirrors (d) how clear the view is
40. 40.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed

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