Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 432 · 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 a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
2. 2.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
3. 3.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) aluminium foil (d) a rough wooden board
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a battery cell (d) a pencil
5. 5.🔍 Which is the odd one out? (a) dark soil (b) aluminium foil (c) a mirror (d) still clear water
6. 6.⚖️ 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 measure it (b) we keep it the same (c) we change it
7. 7.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
8. 8.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) broken glass bits (d) loose glass panes
9. 9.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) a balloon (d) a ruler
10. 10.🔭 What does a periscope let you do? (a) hear far sounds (b) see over a wall (c) see germs (d) see in the dark
11. 11.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
12. 12.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
13. 13.🔭 How many mirrors does a simple periscope use?
14. 14.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) yeast (d) an empty juice carton
15. 15.True or false: black cloth reflects light well. (a) True (b) False
16. 16.📘 Light bouncing off a mirror is called ___. (a) refraction (b) magnetism (c) reflection (d) evaporation
17. 17.⚖️ 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) True (b) False
18. 18.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) still clear water (d) dark soil
19. 19.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a magnet (c) yeast (d) a battery cell
20. 20.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
22. 22.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) dark soil (d) a shiny steel plate
23. 23.True or false: a pencil is needed for the periscope. (a) False (b) True
24. 24.⚖️ 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
25. 25.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) still clear water (d) black cloth
26. 26.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a dull brick (c) still clear water (d) a mirror
27. 27.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
28. 28.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) nothing at all (d) taller walls
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a shiny steel plate (d) dark soil
31. 31.🧺 Which of these is needed for the periscope? (a) yeast (b) a pencil (c) a balloon (d) turmeric powder
32. 32.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a shiny steel plate (d) a rough wooden board
34. 34.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) a rough wooden board (d) black cloth
35. 35.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
37. 37.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
38. 38.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) two small mirrors (d) a battery cell
39. 39.True or false: a rough wooden board reflects light poorly. (a) False (b) True
40. 40.True or false: a mirror reflects light poorly. (a) True (b) False

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