Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 795 · 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.🔭 How many mirrors does a simple periscope use?
2. 2.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits
3. 3.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a farmer (d) a pilot in a plane
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a pencil (d) turmeric powder
5. 5.True or false: two small mirrors is needed for the periscope. (a) True (b) False
6. 6.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a balloon (c) two small mirrors (d) sticky tape
7. 7.True or false: still clear water reflects light well. (a) False (b) True
8. 8.⚖️ 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 mirrors (c) the object we look at (d) the same light
9. 9.🔭 Which of these reflects light well? (a) a rough wooden board (b) still clear water (c) dark soil (d) a dull brick
10. 10.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.🔭 How many times does light bounce off a mirror in a simple periscope?
12. 12.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) a shiny steel plate (d) aluminium foil
13. 13.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
14. 14.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) only short walls (d) nothing at all
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) sticky tape (d) a balloon
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
19. 19.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 180 degrees (d) 10 degrees
20. 20.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) dark soil (d) still clear water
21. 21.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
22. 22.True or false: a pencil is needed for the periscope. (a) False (b) True
23. 23.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
24. 24.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
25. 25.🧺 Which of these is needed for the periscope? (a) a pencil (b) a magnet (c) turmeric powder (d) a battery cell
26. 26.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) a magnet (d) a ruler
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
28. 28.True or false: still clear water reflects light poorly. (a) True (b) False
29. 29.🔭 Which of these reflects light well? (a) black cloth (b) a mirror (c) a dull brick (d) dark soil
30. 30.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) a shiny steel plate (d) aluminium foil
31. 31.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) still clear water (d) a dull brick
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a magnet (d) an empty juice carton
33. 33.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.🔮 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
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) two small mirrors (d) a battery cell
36. 36.🧺 Which of these is needed for the periscope? (a) sticky tape (b) turmeric powder (c) a balloon (d) vinegar
37. 37.⚖️ 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 keep it the same (b) we change it (c) we measure it
38. 38.🧺 Which of these is needed for the periscope? (a) a magnet (b) an empty juice carton (c) turmeric powder (d) a balloon
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) vinegar (c) a pencil (d) an empty juice carton
40. 40.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed

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