Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 178 · 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) yeast (b) an empty juice carton (c) vinegar (d) turmeric powder
2. 2.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) plastic safety mirrors (d) broken glass bits
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
4. 4.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) a rough wooden board (d) aluminium foil
5. 5.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) a mirror (d) a dull brick
6. 6.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
7. 7.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) still clear water (d) a mirror
9. 9.⚖️ 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
10. 10.True or false: two small mirrors is needed for the periscope. (a) False (b) True
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) a balloon (d) two small mirrors
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
13. 13.True or false: still clear water reflects light well. (a) True (b) False
14. 14.🔭 How many mirrors does a simple periscope use?
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) how clear the view is (c) the object we look at (d) the angle of the mirrors
16. 16.🔭 How many times does light bounce off a mirror in a simple periscope?
17. 17.True or false: a rough wooden board reflects light poorly. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) black cloth (d) a shiny steel plate
19. 19.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
21. 21.⚖️ 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 change it (b) we keep it the same (c) we measure it
22. 22.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a tree (d) a friend’s toy
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) dark soil (d) a shiny steel plate
25. 25.True or false: a rough wooden board reflects light well. (a) False (b) True
26. 26.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
27. 27.⚖️ 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 same carton (c) the angle of the mirrors
28. 28.⚖️ 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
29. 29.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
30. 30.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) yeast (d) a pencil
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) vinegar (d) a ruler
33. 33.True or false: black cloth reflects light poorly. (a) False (b) True
34. 34.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) dark soil (d) a shiny steel plate
35. 35.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a farmer (d) a baker
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
37. 37.True or false: a balloon is not needed for the periscope. (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) sticky tape (d) a battery cell
39. 39.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) yeast (d) an empty juice carton
40. 40.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) aluminium foil (d) a rough wooden board

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