Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 716 · 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.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) see in the dark (d) hear far sounds
2. 2.⚖️ 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
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) an empty juice carton (c) a pencil (d) two small mirrors
4. 4.⚖️ 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 keep it the same (b) we change it (c) we measure it
5. 5.True or false: dark soil reflects light poorly. (a) True (b) False
6. 6.⚖️ 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 keep it the same (c) we change it
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) vinegar (d) an empty juice carton
8. 8.True or false: vinegar is not needed for the periscope. (a) False (b) True
9. 9.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
10. 10.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) dark soil
11. 11.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a rough wooden board (c) a dull brick (d) dark soil
12. 12.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
13. 13.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
14. 14.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
15. 15.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
16. 16.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) aluminium foil (d) a rough wooden board
17. 17.🔭 How many times does light bounce off a mirror in a simple periscope?
18. 18.🔭 Which of these reflects light well? (a) dark soil (b) still clear water (c) black cloth (d) a rough wooden board
19. 19.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
20. 20.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
21. 21.🧺 Which of these is not needed for the periscope? (a) a balloon (b) two small mirrors (c) an empty juice carton (d) a pencil
22. 22.⚖️ 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
23. 23.True or false: a balloon is needed for the periscope. (a) True (b) False
24. 24.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
26. 26.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
27. 27.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) how clear the view is (c) the same light (d) the object we look at
29. 29.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) a brighter view (d) two pictures
30. 30.🔭 Which of these reflects light well? (a) aluminium foil (b) a dull brick (c) a rough wooden board (d) black cloth
31. 31.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
32. 32.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) the ground (d) nothing at all
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
34. 34.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy
35. 35.⚖️ 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 measure it (c) we change it
36. 36.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) two small mirrors (d) a magnet
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) True (b) False
38. 38.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) a dull brick (d) black cloth
39. 39.🔭 How many mirrors does a simple periscope use?
40. 40.True or false: vinegar is needed for the periscope. (a) False (b) True

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