Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 525 · 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 pencil for the periscope? (a) not needed (b) needed
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) two small mirrors (d) a magnet
3. 3.🔭 Which of these reflects light well? (a) dark soil (b) a shiny steel plate (c) a rough wooden board (d) black cloth
4. 4.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) an empty juice carton (d) vinegar
5. 5.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) yeast (c) a balloon (d) a battery cell
6. 6.True or false: still clear water reflects light well. (a) True (b) False
7. 7.True or false: a ruler is not needed for the periscope. (a) True (b) False
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
9. 9.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) a friend’s toy (d) the Sun
10. 10.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) plastic safety mirrors (d) big wall mirrors
11. 11.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.⚖️ 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 light (c) how clear the view is
14. 14.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) an empty juice carton (c) two small mirrors (d) a pencil
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a pencil (d) vinegar
16. 16.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a magnet (c) vinegar (d) a balloon
17. 17.🔭 How many times does light bounce off a mirror in a simple periscope?
18. 18.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 10 degrees (d) 180 degrees
19. 19.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) black cloth (d) a mirror
20. 20.⚖️ 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 change it (b) we keep it the same (c) we measure it
21. 21.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
22. 22.⚖️ 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 object we look at (c) the angle of the mirrors (d) the same light
23. 23.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a rough wooden board (d) still clear water
24. 24.True or false: a rough wooden board reflects light well. (a) True (b) False
25. 25.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) in colour (d) upside down only
26. 26.True or false: a balloon is needed for the periscope. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) dark soil (d) aluminium foil
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.True or false: aluminium foil reflects light poorly. (a) False (b) True
30. 30.🧺 Which of these is not needed for the periscope? (a) a ruler (b) sticky tape (c) an empty juice carton (d) a magnet
31. 31.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
32. 32.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
33. 33.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) a mirror (d) black cloth
34. 34.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
35. 35.🔭 How many mirrors does a simple periscope use?
36. 36.True or false: a balloon is not needed for the periscope. (a) False (b) True
37. 37.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) yeast (d) two small mirrors
39. 39.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
40. 40.True or false: a rough wooden board reflects light poorly. (a) True (b) False

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