Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 843 · 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.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a battery cell (d) a pencil
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.True or false: yeast is needed for the periscope. (a) False (b) True
5. 5.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) dark soil (d) aluminium foil
6. 6.🔮 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
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a ruler (d) yeast
8. 8.⚖️ 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 change it (b) we measure it (c) we keep it the same
9. 9.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) a dull brick (d) dark soil
10. 10.⚖️ 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 keep it the same (b) we measure it (c) we change it
11. 11.True or false: vinegar is needed for the periscope. (a) False (b) True
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same mirrors (c) the same light (d) how clear the view is
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is (d) the same mirrors
14. 14.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) a shiny steel plate (d) a mirror
15. 15.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a mirror (d) dark soil
16. 16.⚖️ 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) True (b) False
17. 17.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a magnet (c) sticky tape (d) a ruler
19. 19.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) aluminium foil (d) a rough wooden board
20. 20.🧺 Which of these is needed for the periscope? (a) a ruler (b) turmeric powder (c) vinegar (d) yeast
21. 21.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
22. 22.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
23. 23.⚖️ 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
24. 24.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.⚖️ 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
26. 26.🔭 How many times does light bounce off a mirror in a simple periscope?
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) vinegar (d) a ruler
28. 28.True or false: sticky tape is not needed for the periscope. (a) True (b) False
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) False (b) True
30. 30.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) vinegar (d) a ruler
31. 31.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
33. 33.⚖️ 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
34. 34.⚖️ 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
35. 35.True or false: a shiny steel plate reflects light well. (a) True (b) False
36. 36.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
37. 37.True or false: sticky tape is needed for the periscope. (a) False (b) True
38. 38.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a tree (d) a wall
39. 39.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) a rough wooden board (d) still clear water
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it

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