Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 204 · 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 mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) broken glass bits (d) big wall mirrors
2. 2.⚖️ 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) False (b) True
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same mirrors
6. 6.⚖️ 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 carton (b) the angle of the mirrors (c) how clear the view is (d) the object we look at
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) yeast (c) an empty juice carton (d) a pencil
8. 8.True or false: still clear water reflects light well. (a) False (b) True
9. 9.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) sticky tape (d) a magnet
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) an empty juice carton (d) two small mirrors
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) turmeric powder (d) an empty juice carton
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
13. 13.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a mirror (d) a rough wooden board
14. 14.🧺 Which of these is needed for the periscope? (a) a pencil (b) a balloon (c) vinegar (d) a magnet
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) True (b) False
16. 16.⚖️ 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
17. 17.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) so light reaches the eye (d) to make it heavy
18. 18.⚖️ 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) False (b) True
19. 19.True or false: a battery cell is not needed for the periscope. (a) True (b) False
20. 20.🧺 Which of these is not needed for the periscope? (a) a pencil (b) yeast (c) an empty juice carton (d) two small mirrors
21. 21.🧺 Which of these is needed for the periscope? (a) yeast (b) vinegar (c) a balloon (d) two small mirrors
22. 22.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) sticky tape (c) a magnet (d) vinegar
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) an empty juice carton (c) a pencil (d) two small mirrors
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 measure it (b) we change it (c) we keep it the same
25. 25.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) still clear water (d) dark soil
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) black cloth (d) aluminium foil
28. 28.True or false: a magnet is needed for the periscope. (a) False (b) True
29. 29.⚖️ 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
30. 30.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a submarine crew (d) a baker
31. 31.🔭 How many mirrors does a simple periscope use?
32. 32.🧺 Which of these is not needed for the periscope? (a) a ruler (b) vinegar (c) a pencil (d) sticky tape
33. 33.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) a rainbow (d) two pictures
34. 34.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) a shiny steel plate (d) a dull brick
35. 35.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) a rough wooden board (d) a dull brick
36. 36.True or false: a ruler is needed for the periscope. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) a rough wooden board (d) dark soil
38. 38.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) evaporation (d) magnetism
40. 40.⚖️ 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

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