Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 758 · 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.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
2. 2.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a rough wooden board (d) a mirror
3. 3.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
4. 4.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
5. 5.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
6. 6.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
7. 7.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a mirror (d) a rough wooden board
8. 8.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
9. 9.True or false: a rough wooden board reflects light poorly. (a) True (b) False
10. 10.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
11. 11.🔍 Which is the odd one out? (a) dark soil (b) still clear water (c) a rough wooden board (d) black cloth
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a ruler (c) sticky tape (d) an empty juice carton
13. 13.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
14. 14.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a shiny steel plate (d) dark soil
15. 15.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
17. 17.True or false: a battery cell is needed for the periscope. (a) False (b) True
18. 18.🔭 How many mirrors does a simple periscope use?
19. 19.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
20. 20.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) a magnet (d) two small mirrors
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
22. 22.🔭 How many times does light bounce off a mirror in a simple periscope?
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we keep it the same (c) we measure it
24. 24.True or false: sticky tape is needed for the periscope. (a) False (b) True
25. 25.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) flipped left to right (d) upside down only
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a ruler (d) turmeric powder
27. 27.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a battery cell (c) a ruler (d) an empty juice carton
28. 28.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a dull brick (d) a mirror
29. 29.True or false: aluminium foil reflects light well. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) black cloth (d) a shiny steel plate
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a ruler (d) vinegar
32. 32.True or false: a rough wooden board reflects light well. (a) True (b) False
33. 33.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 45 degrees (c) 10 degrees (d) 90 degrees
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a balloon (d) two small mirrors
35. 35.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) an empty juice carton (d) vinegar
36. 36.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) loose glass panes (d) broken glass bits
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same light (c) the object we look at (d) the same mirrors
38. 38.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a farmer (c) a baker (d) a pilot in a plane
39. 39.⚖️ 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
40. 40.True or false: an empty juice carton is needed for the periscope. (a) False (b) True

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