Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 822 · 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.⚖️ 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 measure it (c) we change it
2. 2.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) dark soil (d) still clear water
3. 3.⚖️ 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
4. 4.True or false: a mirror reflects light poorly. (a) True (b) False
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) broken glass bits (d) plastic safety mirrors
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) aluminium foil (d) dark soil
8. 8.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) a friend’s toy (d) the Sun
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a ruler (d) vinegar
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) True (b) False
11. 11.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a pencil (c) yeast (d) a magnet
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) the angle of the mirrors (c) how clear the view is
13. 13.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) still clear water (d) a dull brick
14. 14.True or false: yeast is needed for the periscope. (a) False (b) True
15. 15.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
16. 16.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) black cloth (d) aluminium foil
17. 17.🔭 Which of these reflects light poorly? (a) dark soil (b) aluminium foil (c) still clear water (d) a shiny steel plate
18. 18.⚖️ 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 change it (c) we keep it the same
19. 19.🧺 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) a ruler
20. 20.🔮 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
21. 21.True or false: black cloth reflects light well. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a mirror (d) a dull brick
23. 23.True or false: sticky tape is not needed for the periscope. (a) False (b) True
24. 24.🧺 Which of these is not needed for the periscope? (a) vinegar (b) an empty juice carton (c) two small mirrors (d) a ruler
25. 25.🔭 How many times does light bounce off a mirror in a simple periscope?
26. 26.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) aluminium foil (d) a rough wooden board
27. 27.⚖️ 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 mirrors
28. 28.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
29. 29.True or false: a magnet is not needed for the periscope. (a) True (b) False
30. 30.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 90 degrees (d) 45 degrees
31. 31.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
32. 32.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
33. 33.⚖️ 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
34. 34.True or false: yeast is not needed for the periscope. (a) False (b) True
35. 35.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.True or false: vinegar is needed for the periscope. (a) False (b) True
37. 37.⚖️ 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
38. 38.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
40. 40.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) evaporation (d) reflection

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