Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 930 · 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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the object we look at (c) the same light (d) the same mirrors
2. 2.🔭 How many times does light bounce off a mirror in a simple periscope?
3. 3.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) magnetism (d) reflection
4. 4.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) aluminium foil (d) black cloth
5. 5.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) a shiny steel plate (d) dark soil
6. 6.⚖️ 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 measure it (b) we keep it the same (c) we change it
7. 7.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) an empty juice carton (d) a balloon
8. 8.🔭 How many mirrors does a simple periscope use?
9. 9.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
10. 10.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) to make it heavy (d) so light reaches the eye
12. 12.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) still clear water (d) aluminium foil
13. 13.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
14. 14.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a dull brick (d) still clear water
15. 15.⚖️ 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) True (b) False
16. 16.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a rough wooden board (d) aluminium foil
17. 17.🔮 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
18. 18.🔭 Which of these reflects light well? (a) a dull brick (b) still clear water (c) dark soil (d) black cloth
19. 19.⚖️ 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
20. 20.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) yeast (d) two small mirrors
21. 21.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
22. 22.True or false: a mirror reflects light well. (a) False (b) True
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the same light (c) how clear the view is (d) the object we look at
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) two small mirrors (c) a ruler (d) sticky tape
26. 26.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) two small mirrors (d) a battery cell
27. 27.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
28. 28.🔭 Which of these reflects light poorly? (a) black cloth (b) a shiny steel plate (c) a mirror (d) aluminium foil
29. 29.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
30. 30.True or false: a ruler is not needed for the periscope. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) a mirror (d) black cloth
32. 32.🛟 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
33. 33.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
34. 34.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
35. 35.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
38. 38.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see germs (d) see over a wall
39. 39.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
40. 40.⚖️ 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

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