Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 872 · 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.🧺 Which of these is needed for the periscope? (a) a magnet (b) a balloon (c) a battery cell (d) a pencil
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the angle of the mirrors (c) the object we look at (d) how clear the view is
3. 3.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
4. 4.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) a shiny steel plate (d) a dull brick
5. 5.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) a dull brick (d) black cloth
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a pencil (c) two small mirrors (d) an empty juice carton
7. 7.⚖️ 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 change it (c) we keep it the same
8. 8.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
10. 10.⚖️ 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 carton (d) the same mirrors
11. 11.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
12. 12.🔭 Which of these reflects light poorly? (a) dark soil (b) a shiny steel plate (c) still clear water (d) a mirror
13. 13.True or false: a shiny steel plate reflects light well. (a) False (b) True
14. 14.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
15. 15.True or false: a ruler is not needed for the periscope. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) a dull brick (d) still clear water
17. 17.True or false: a magnet is needed for the periscope. (a) True (b) False
18. 18.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
19. 19.True or false: a ruler is needed for the periscope. (a) False (b) True
20. 20.⚖️ 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) True (b) False
21. 21.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
22. 22.True or false: a battery cell is needed for the periscope. (a) True (b) False
23. 23.🔭 How many mirrors does a simple periscope use?
24. 24.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) nothing at all (d) taller walls
25. 25.🧺 Which of these is needed for the periscope? (a) vinegar (b) an empty juice carton (c) yeast (d) a magnet
26. 26.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a dull brick (d) still clear water
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) vinegar
28. 28.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) black cloth
29. 29.🔭 How many times does light bounce off a mirror in a simple periscope?
30. 30.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
31. 31.🔭 Which of these reflects light well? (a) a dull brick (b) a mirror (c) a rough wooden board (d) black cloth
32. 32.True or false: a mirror reflects light poorly. (a) True (b) False
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
35. 35.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
36. 36.True or false: sticky tape is not needed for the periscope. (a) False (b) True
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a battery cell (c) a ruler (d) a pencil
38. 38.⚖️ 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
39. 39.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.⚖️ 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

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