Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 486 · 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.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a rainbow (d) a brighter view
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a pencil (d) a magnet
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a ruler (c) two small mirrors (d) sticky tape
4. 4.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) turmeric powder (d) two small mirrors
5. 5.📘 Light bouncing off a mirror is called ___. (a) refraction (b) reflection (c) magnetism (d) evaporation
6. 6.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a friend’s toy (d) a wall
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) to make it heavy (d) so light reaches the eye
9. 9.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
10. 10.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a balloon (c) turmeric powder (d) vinegar
11. 11.True or false: sticky tape is needed for the periscope. (a) True (b) False
12. 12.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
13. 13.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) dark soil (d) still clear water
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) turmeric powder (c) a ruler (d) a pencil
15. 15.⚖️ 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 measure it (b) we keep it the same (c) we change it
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) True (b) False
17. 17.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
18. 18.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.True or false: a balloon is not needed for the periscope. (a) True (b) False
20. 20.True or false: a shiny steel plate reflects light well. (a) False (b) True
21. 21.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
23. 23.🔍 Which is the odd one out? (a) a dull brick (b) aluminium foil (c) a mirror (d) a shiny steel plate
24. 24.⚖️ 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 change it (b) we keep it the same (c) we measure it
25. 25.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) nothing at all (d) the ground
26. 26.🔭 How many mirrors does a simple periscope use?
27. 27.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
28. 28.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
29. 29.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) vinegar (d) two small mirrors
30. 30.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
31. 31.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a dull brick (d) a mirror
32. 32.⚖️ 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 change it (c) we measure it
33. 33.🔮 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
34. 34.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a pilot in a plane (d) a submarine crew
35. 35.⚖️ 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) how clear the view is (d) the angle of the mirrors
36. 36.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) a ruler (c) two small mirrors (d) an empty juice carton
37. 37.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) black cloth (d) still clear water
38. 38.⚖️ 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) how clear the view is (c) the same light
39. 39.⚖️ 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
40. 40.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well

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