Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 823 · 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.True or false: a ruler is needed for the periscope. (a) True (b) False
2. 2.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) a ruler (c) an empty juice carton (d) two small mirrors
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
4. 4.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
5. 5.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a pilot in a plane (d) a farmer
7. 7.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) a mirror (d) a shiny steel plate
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
9. 9.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) still clear water (d) black cloth
10. 10.True or false: vinegar is not needed for the periscope. (a) True (b) False
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) how clear the view is (c) the object we look at (d) the same mirrors
12. 12.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) a rainbow (d) only darkness
13. 13.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) a battery cell (d) sticky tape
14. 14.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) vinegar (d) an empty juice carton
15. 15.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
16. 16.True or false: aluminium foil reflects light well. (a) True (b) False
17. 17.🔭 How many times does light bounce off a mirror in a simple periscope?
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a battery cell (c) a pencil (d) an empty juice carton
19. 19.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) a pencil (d) yeast
20. 20.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
21. 21.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
22. 22.True or false: a ruler is not needed for the periscope. (a) False (b) True
23. 23.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
24. 24.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 90 degrees (d) 10 degrees
25. 25.⚖️ 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
26. 26.True or false: a pencil is not needed for the periscope. (a) True (b) False
27. 27.⚖️ 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
28. 28.True or false: sticky tape is not needed for the periscope. (a) False (b) True
29. 29.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) upside down only (d) in colour
30. 30.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) a magnet (d) sticky tape
31. 31.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) aluminium foil (d) black cloth
32. 32.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) the ground (d) only short walls
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) sticky tape (d) an empty juice carton
34. 34.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
35. 35.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) dark soil (d) a rough wooden board
36. 36.⚖️ 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 object we look at
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) an empty juice carton (c) two small mirrors (d) a ruler
38. 38.True or false: still clear water reflects light well. (a) False (b) True
39. 39.⚖️ 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 change it (c) we keep it the same
40. 40.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) a mirror (d) black cloth

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