Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 12 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) sticky tape (c) an empty juice carton (d) a pencil
2. 2.True or false: aluminium foil reflects light well. (a) True (b) False
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) a mirror (d) still clear water
5. 5.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
6. 6.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) a brighter view (d) only darkness
7. 7.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
8. 8.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) loose glass panes (d) big wall mirrors
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) sticky tape (d) a balloon
10. 10.⚖️ 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 object we look at (c) the same carton (d) the same mirrors
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we keep it the same (c) we change it
12. 12.🔭 How many mirrors does a simple periscope use?
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) yeast (c) a ruler (d) an empty juice carton
14. 14.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) so light reaches the eye (d) to make it heavy
15. 15.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
16. 16.True or false: dark soil reflects light poorly. (a) False (b) True
17. 17.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) vinegar (d) an empty juice carton
18. 18.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
19. 19.🧺 Which of these is needed for the periscope? (a) vinegar (b) an empty juice carton (c) yeast (d) turmeric powder
20. 20.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
21. 21.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) a dull brick (d) black cloth
22. 22.True or false: a balloon is needed for the periscope. (a) False (b) True
23. 23.True or false: a ruler is not needed for the periscope. (a) True (b) False
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
25. 25.⚖️ 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 change it (b) we measure it (c) we keep it the same
26. 26.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) two small mirrors (d) yeast
27. 27.🔭 Which of these reflects light well? (a) black cloth (b) aluminium foil (c) a rough wooden board (d) a dull brick
28. 28.🔭 Which of these reflects light poorly? (a) aluminium foil (b) black cloth (c) still clear water (d) a mirror
29. 29.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 10 degrees (d) 180 degrees
30. 30.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
31. 31.True or false: a dull brick reflects light well. (a) True (b) False
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 measure it (b) we keep it the same (c) we change it
33. 33.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) a dull brick (d) still clear water
34. 34.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a ruler (c) yeast (d) a balloon
35. 35.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) two small mirrors (c) a pencil (d) an empty juice carton
36. 36.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) turmeric powder (c) two small mirrors (d) a pencil
37. 37.🔍 Which is the odd one out? (a) a shiny steel plate (b) dark soil (c) black cloth (d) a rough wooden board
38. 38.🔭 Which of these reflects light well? (a) a shiny steel plate (b) dark soil (c) a rough wooden board (d) a dull brick
39. 39.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) only short walls (d) taller walls
40. 40.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) dark soil (d) a shiny steel plate

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