Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 203 · 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 mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a ruler (c) sticky tape (d) a pencil
3. 3.🔍 Which is the odd one out? (a) a dull brick (b) aluminium foil (c) a shiny steel plate (d) a mirror
4. 4.🔍 Which is the odd one out? (a) a shiny steel plate (b) dark soil (c) aluminium foil (d) still clear water
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a balloon (c) an empty juice carton (d) a pencil
6. 6.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) a magnet (d) a ruler
7. 7.⚖️ 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
8. 8.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
9. 9.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) an empty juice carton (d) vinegar
10. 10.🔭 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
11. 11.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) in colour (d) much bigger
12. 12.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) a ruler (d) a battery cell
13. 13.⚖️ 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 object we look at (c) how clear the view is
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
15. 15.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so light reaches the eye (d) so it looks shiny
16. 16.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) a dull brick (d) dark soil
17. 17.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
18. 18.True or false: a shiny steel plate reflects light well. (a) True (b) False
19. 19.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) True (b) False
21. 21.⚖️ 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
22. 22.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
23. 23.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) a pencil (d) a balloon
24. 24.True or false: a dull brick reflects light well. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a shiny steel plate (d) a dull brick
26. 26.⚖️ 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 measure it (c) we change it
27. 27.⚖️ 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
28. 28.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) dark soil
29. 29.🔭 How many mirrors does a simple periscope use?
30. 30.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
31. 31.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 180 degrees (d) 90 degrees
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the angle of the mirrors (c) the same mirrors (d) the same carton
33. 33.🔭 Which of these reflects light well? (a) a dull brick (b) a mirror (c) dark soil (d) black cloth
34. 34.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) only short walls (d) nothing at all
35. 35.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the object we look at (c) the angle of the mirrors (d) how clear the view is
37. 37.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.⚖️ 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) False (b) True
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a ruler (d) turmeric powder

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