Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 847 · 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 hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) much bigger (d) flipped left to right
2. 2.⚖️ 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 carton (c) the same light (d) the object we look at
3. 3.⚖️ 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
4. 4.🔭 Which of these reflects light well? (a) a shiny steel plate (b) black cloth (c) a dull brick (d) dark soil
5. 5.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) vinegar (c) a pencil (d) sticky tape
6. 6.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) big wall mirrors (d) loose glass panes
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) a ruler (d) turmeric powder
8. 8.⚖️ 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
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
10. 10.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
11. 11.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) dark soil (d) black cloth
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) how clear the view is (c) the same carton (d) the same mirrors
13. 13.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
14. 14.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
15. 15.🔭 How many times does light bounce off a mirror in a simple periscope?
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
17. 17.🧺 Which of these is not needed for the periscope? (a) yeast (b) sticky tape (c) a ruler (d) two small mirrors
18. 18.⚖️ 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
19. 19.🧺 Which of these is needed for the periscope? (a) yeast (b) vinegar (c) turmeric powder (d) two small mirrors
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 measure it (b) we keep it the same (c) we change it
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we keep it the same (c) we measure it
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a balloon (d) a ruler
23. 23.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it can float (d) so it looks shiny
24. 24.🔭 Which of these reflects light well? (a) black cloth (b) aluminium foil (c) a rough wooden board (d) dark soil
25. 25.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
26. 26.🧺 Which of these is needed for the periscope? (a) yeast (b) an empty juice carton (c) a balloon (d) a battery cell
27. 27.🔭 How many mirrors does a simple periscope use?
28. 28.True or false: sticky tape is needed for the periscope. (a) True (b) False
29. 29.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) sticky tape (d) a magnet
31. 31.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 90 degrees (d) 10 degrees
32. 32.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) the ground (d) taller walls
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) vinegar (d) sticky tape
34. 34.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a pilot in a plane (d) a baker
35. 35.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) a rough wooden board (d) still clear water
36. 36.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
37. 37.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
39. 39.⚖️ 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 change it (c) we measure it
40. 40.True or false: black cloth reflects light poorly. (a) False (b) True

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