Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 24 · 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.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
2. 2.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) two small mirrors (c) an empty juice carton (d) a pencil
5. 5.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) black cloth (d) a mirror
6. 6.True or false: a magnet is needed for the periscope. (a) True (b) False
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a battery cell (d) a ruler
8. 8.⚖️ 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
9. 9.🛟 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
10. 10.🧺 Which of these is needed for the periscope? (a) a balloon (b) turmeric powder (c) a magnet (d) two small mirrors
11. 11.⚖️ 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) the same carton (c) how clear the view is
12. 12.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
13. 13.🔭 How many times does light bounce off a mirror in a simple periscope?
14. 14.⚖️ 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
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) vinegar (c) sticky tape (d) a ruler
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same light (c) the angle of the mirrors (d) the same mirrors
17. 17.True or false: yeast is needed for the periscope. (a) True (b) False
18. 18.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
19. 19.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) only darkness (d) two pictures
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is
21. 21.⚖️ 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) how clear the view is (c) the same mirrors (d) the same carton
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a balloon (c) an empty juice carton (d) a pencil
23. 23.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) still clear water (d) a shiny steel plate
24. 24.True or false: a balloon is not needed for the periscope. (a) False (b) True
25. 25.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
26. 26.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) still clear water (d) a rough wooden board
27. 27.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
28. 28.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) dark soil (d) still clear water
29. 29.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) two small mirrors (d) turmeric powder
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) yeast (c) a ruler (d) a pencil
31. 31.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
32. 32.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a baker (d) a submarine crew
34. 34.True or false: a mirror reflects light poorly. (a) True (b) False
35. 35.True or false: a dull brick reflects light well. (a) False (b) True
36. 36.⚖️ 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
37. 37.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) a balloon (d) an empty juice carton
38. 38.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a shiny steel plate (d) black cloth
39. 39.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) sticky tape (d) a magnet
40. 40.🔍 Which is the odd one out? (a) aluminium foil (b) dark soil (c) a mirror (d) still clear water

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