Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 708 · 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 cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) a brighter view (d) only darkness
2. 2.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
3. 3.🔭 What does a periscope let you do? (a) hear far sounds (b) see over a wall (c) see germs (d) see in the dark
4. 4.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
5. 5.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) taller walls (d) only short walls
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a battery cell (c) an empty juice carton (d) sticky tape
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 change it (b) we measure it (c) we keep it the same
8. 8.🔭 How many times does light bounce off a mirror in a simple periscope?
9. 9.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a mirror (d) dark soil
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
11. 11.True or false: a ruler is needed for the periscope. (a) False (b) True
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same carton (c) the angle of the mirrors (d) the same light
13. 13.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
14. 14.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a shiny steel plate (d) dark soil
15. 15.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a magnet (c) turmeric powder (d) vinegar
17. 17.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
18. 18.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) a shiny steel plate (d) aluminium foil
20. 20.🔭 How many mirrors does a simple periscope use?
21. 21.True or false: a balloon is not needed for the periscope. (a) True (b) False
22. 22.🔭 Which of these reflects light poorly? (a) dark soil (b) aluminium foil (c) a shiny steel plate (d) still clear water
23. 23.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so it looks shiny (d) so light reaches the eye
24. 24.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) still clear water (d) a rough wooden board
25. 25.⚖️ 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 angle of the mirrors (c) how clear the view is (d) the same carton
26. 26.⚖️ 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) how clear the view is (c) the angle of the mirrors
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.🔍 Which is the odd one out? (a) black cloth (b) aluminium foil (c) a mirror (d) still clear water
29. 29.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
30. 30.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) upside down only (d) in colour
31. 31.⚖️ 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 change it (b) we measure it (c) we keep it the same
32. 32.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) black cloth (d) still clear water
36. 36.⚖️ 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
37. 37.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a magnet (d) an empty juice carton
39. 39.True or false: a battery cell is not needed for the periscope. (a) True (b) False
40. 40.True or false: a balloon is needed for the periscope. (a) True (b) False

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