Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 427 · 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.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
2. 2.True or false: a rough wooden board reflects light poorly. (a) False (b) True
3. 3.True or false: aluminium foil reflects light poorly. (a) True (b) False
4. 4.⚖️ 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
5. 5.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
7. 7.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) only short walls (d) the ground
8. 8.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
9. 9.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
10. 10.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) black cloth (d) a mirror
11. 11.True or false: vinegar is needed for the periscope. (a) False (b) True
12. 12.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a magnet (c) a pencil (d) an empty juice carton
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) dark soil (d) black cloth
15. 15.True or false: a dull brick reflects light well. (a) False (b) True
16. 16.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) loose glass panes (d) plastic safety mirrors
17. 17.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
18. 18.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) flipped left to right (d) much bigger
19. 19.True or false: yeast is not needed for the periscope. (a) False (b) True
20. 20.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) vinegar (d) sticky tape
22. 22.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
23. 23.⚖️ 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
24. 24.🔭 How many times does light bounce off a mirror in a simple periscope?
25. 25.🔭 How many mirrors does a simple periscope use?
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
27. 27.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) two pictures (d) a rainbow
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) an empty juice carton (d) a ruler
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) yeast (d) a ruler
32. 32.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.⚖️ 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
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.🧺 Which of these is needed for the periscope? (a) yeast (b) a balloon (c) two small mirrors (d) a magnet
36. 36.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
37. 37.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a rough wooden board (c) aluminium foil (d) still clear water
38. 38.True or false: vinegar is not needed for the periscope. (a) False (b) True
39. 39.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) turmeric powder (d) an empty juice carton
40. 40.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) vinegar (c) a pencil (d) sticky tape

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