Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 815 · 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) sticky tape (b) yeast (c) a ruler (d) an empty juice carton
2. 2.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) two small mirrors (d) yeast
3. 3.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
4. 4.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
5. 5.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) aluminium foil (d) dark soil
6. 6.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a wall (d) a tree
7. 7.🧺 Which of these is needed for the periscope? (a) vinegar (b) two small mirrors (c) a magnet (d) a battery cell
8. 8.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a baker (d) a submarine crew
9. 9.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 10 degrees (d) 180 degrees
10. 10.True or false: a ruler is needed for the periscope. (a) False (b) True
11. 11.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.True or false: a rough wooden board reflects light well. (a) False (b) True
14. 14.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) sticky tape (d) a battery cell
15. 15.⚖️ 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) how clear the view is (c) the same carton
16. 16.🧺 Which of these is needed for the periscope? (a) yeast (b) a balloon (c) an empty juice carton (d) turmeric powder
17. 17.True or false: a balloon is not needed for the periscope. (a) True (b) False
18. 18.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) still clear water (d) black cloth
19. 19.True or false: a mirror reflects light well. (a) False (b) True
20. 20.⚖️ 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 change it (b) we keep it the same (c) we measure it
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) sticky tape (d) vinegar
22. 22.True or false: a magnet is needed for the periscope. (a) True (b) False
23. 23.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) in colour (d) upside down only
25. 25.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) still clear water (d) a shiny steel plate
26. 26.🔭 How many mirrors does a simple periscope use?
27. 27.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) loose glass panes (d) broken glass bits
28. 28.True or false: a dull brick reflects light well. (a) True (b) False
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) sticky tape (d) a battery cell
30. 30.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) still clear water (d) a dull brick
31. 31.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) a dull brick (d) dark soil
32. 32.⚖️ 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 same light (c) the angle of the mirrors
33. 33.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
34. 34.True or false: yeast is not needed for the periscope. (a) True (b) False
35. 35.⚖️ 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
36. 36.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) the ground (d) taller walls
37. 37.⚖️ 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 measure it (b) we keep it the same (c) we change it
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) how clear the view is (c) the same mirrors (d) the same light
39. 39.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so it looks shiny (d) so light reaches the eye

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