Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 402 · 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.🔭 How many times does light bounce off a mirror in a simple periscope?
2. 2.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.⚖️ 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
4. 4.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) a shiny steel plate (d) still clear water
5. 5.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
6. 6.True or false: a mirror reflects light poorly. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) still clear water (d) a rough wooden board
8. 8.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) black cloth (d) aluminium foil
9. 9.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) broken glass bits (d) plastic safety mirrors
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same light
11. 11.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) vinegar (d) sticky tape
12. 12.🔭 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
13. 13.🔮 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
14. 14.🔭 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
15. 15.True or false: a balloon is needed for the periscope. (a) True (b) False
16. 16.⚖️ 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 measure it (c) we change it
17. 17.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 45 degrees (c) 90 degrees (d) 10 degrees
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
19. 19.True or false: a magnet is needed for the periscope. (a) False (b) True
20. 20.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
21. 21.True or false: a battery cell is needed for the periscope. (a) False (b) True
22. 22.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) aluminium foil (d) a dull brick
23. 23.⚖️ 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 mirrors (c) how clear the view is
24. 24.🧺 Which of these is not needed for the periscope? (a) a balloon (b) sticky tape (c) an empty juice carton (d) two small mirrors
25. 25.⚖️ 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 angle of the mirrors (c) the object we look at (d) the same carton
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the object we look at (c) the angle of the mirrors
27. 27.🔭 How many mirrors does a simple periscope use?
28. 28.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) an empty juice carton (d) a battery cell
30. 30.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) aluminium foil (d) a rough wooden board
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) a ruler (d) turmeric powder
32. 32.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) still clear water (d) a rough wooden board
33. 33.🧺 Which of these is needed for the periscope? (a) a ruler (b) a battery cell (c) a magnet (d) a balloon
34. 34.⚖️ 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 mirrors (c) the object we look at (d) the same carton
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a magnet (d) a ruler
36. 36.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
37. 37.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) two small mirrors (d) vinegar
39. 39.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.True or false: aluminium foil reflects light well. (a) False (b) True

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