Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 210 · 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) broken glass bits (b) loose glass panes (c) plastic safety mirrors (d) big wall mirrors
2. 2.True or false: a dull brick reflects light well. (a) True (b) False
3. 3.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) to make it heavy (d) so it looks shiny
4. 4.⚖️ 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
5. 5.⚖️ 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 keep it the same (b) we measure it (c) we change it
6. 6.🧺 Which of these is needed for the periscope? (a) a magnet (b) vinegar (c) a ruler (d) turmeric powder
7. 7.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) turmeric powder (c) two small mirrors (d) sticky tape
8. 8.🔍 Which is the odd one out? (a) aluminium foil (b) dark soil (c) black cloth (d) a dull brick
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a pencil (c) an empty juice carton (d) a ruler
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we change it (c) we measure it
11. 11.🧺 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
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a ruler (c) two small mirrors (d) a pencil
13. 13.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) two pictures (d) only darkness
14. 14.⚖️ 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 light (b) the same mirrors (c) the same carton (d) the angle of the mirrors
15. 15.⚖️ 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) False (b) True
16. 16.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) still clear water (d) dark soil
17. 17.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
18. 18.True or false: still clear water reflects light poorly. (a) False (b) True
19. 19.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
20. 20.⚖️ 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
21. 21.⚖️ 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
22. 22.True or false: a mirror reflects light well. (a) False (b) True
23. 23.True or false: a magnet is not needed for the periscope. (a) True (b) False
24. 24.🔭 Which of these reflects light poorly? (a) black cloth (b) a shiny steel plate (c) aluminium foil (d) still clear water
25. 25.🔭 How many times does light bounce off a mirror in a simple periscope?
26. 26.True or false: yeast is not needed for the periscope. (a) False (b) True
27. 27.🧺 Which of these is needed for the periscope? (a) a balloon (b) two small mirrors (c) yeast (d) a magnet
28. 28.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
29. 29.🔭 Which of these reflects light well? (a) a mirror (b) a dull brick (c) a rough wooden board (d) dark soil
30. 30.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) a shiny steel plate (d) still clear water
31. 31.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) the ground (d) only short walls
32. 32.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
33. 33.🧺 Which of these is needed for the periscope? (a) a magnet (b) an empty juice carton (c) a balloon (d) yeast
34. 34.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a dull brick (d) a shiny steel plate
35. 35.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
36. 36.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a submarine crew (d) a pilot in a plane
37. 37.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 180 degrees (d) 90 degrees
38. 38.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
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.🔭 How many mirrors does a simple periscope use?

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