Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 520 · 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.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) taller walls (d) nothing at all
2. 2.True or false: a shiny steel plate reflects light well. (a) True (b) False
3. 3.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
4. 4.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same mirrors (b) the angle of the mirrors (c) the same carton (d) the same light
8. 8.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
9. 9.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a magnet (c) sticky tape (d) an empty juice carton
11. 11.True or false: a rough wooden board reflects light well. (a) True (b) False
12. 12.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
13. 13.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) black cloth (d) a mirror
14. 14.True or false: sticky tape is not needed for the periscope. (a) True (b) False
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the same mirrors (c) the angle of the mirrors (d) how clear the view is
16. 16.🛟 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
17. 17.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) a magnet (d) two small mirrors
18. 18.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
20. 20.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a friend’s toy (d) a tree
21. 21.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
22. 22.⚖️ 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
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
24. 24.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
25. 25.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
26. 26.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so it looks shiny (d) so light reaches the eye
27. 27.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.⚖️ 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
29. 29.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) a battery cell (d) two small mirrors
30. 30.⚖️ 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) True (b) False
31. 31.⚖️ 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
32. 32.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
33. 33.🔭 How many times does light bounce off a mirror in a simple periscope?
34. 34.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
35. 35.True or false: a ruler is needed for the periscope. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a mirror (d) dark soil
37. 37.True or false: a mirror reflects light poorly. (a) False (b) True
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.True or false: still clear water reflects light poorly. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a shiny steel plate (d) a dull brick

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