Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 279 · 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 dull brick reflects light well. (a) False (b) True
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
3. 3.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
4. 4.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.⚖️ 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
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) turmeric powder (d) sticky tape
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) True (b) False
10. 10.True or false: a ruler is not needed for the periscope. (a) False (b) True
11. 11.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
12. 12.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a balloon (c) turmeric powder (d) vinegar
13. 13.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
14. 14.True or false: dark soil reflects light poorly. (a) True (b) False
15. 15.🔭 How many mirrors does a simple periscope use?
16. 16.⚖️ 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) the same light (c) the same carton (d) how clear the view is
17. 17.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same carton (b) how clear the view is (c) the same mirrors (d) the angle of the mirrors
19. 19.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a shiny steel plate (d) dark soil
20. 20.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) sticky tape (d) a magnet
21. 21.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.🔭 How many times does light bounce off a mirror in a simple periscope?
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) False (b) True
25. 25.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) a rough wooden board (d) still clear water
26. 26.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
27. 27.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) dark soil (d) aluminium foil
28. 28.🧺 Which of these is needed for the periscope? (a) yeast (b) a balloon (c) a battery cell (d) a ruler
29. 29.🔭 Which of these reflects light poorly? (a) aluminium foil (b) dark soil (c) still clear water (d) a shiny steel plate
30. 30.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) vinegar (c) a pencil (d) sticky tape
31. 31.True or false: a rough wooden board reflects light well. (a) True (b) False
32. 32.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.True or false: aluminium foil reflects light well. (a) True (b) False
34. 34.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
35. 35.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) see over a wall (d) hear far sounds
36. 36.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) a wall (d) the Sun
37. 37.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
38. 38.🧺 Which of these is needed for the periscope? (a) a pencil (b) yeast (c) vinegar (d) a battery cell
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) vinegar (c) an empty juice carton (d) two small mirrors
40. 40.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed

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