Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 874 · 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 reflects light well? (a) a rough wooden board (b) aluminium foil (c) dark soil (d) a dull brick
2. 2.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a mirror (d) a rough wooden board
4. 4.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it looks shiny (c) so light reaches the eye (d) so it can float
5. 5.⚖️ 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
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) vinegar (d) an empty juice carton
7. 7.🧺 Which of these is needed for the periscope? (a) a ruler (b) a battery cell (c) turmeric powder (d) a balloon
8. 8.⚖️ 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
9. 9.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) two pictures (d) a rainbow
10. 10.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
11. 11.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
12. 12.🔭 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
13. 13.True or false: a dull brick reflects light poorly. (a) False (b) True
14. 14.🔭 How many times does light bounce off a mirror in a simple periscope?
15. 15.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
16. 16.⚖️ 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
17. 17.⚖️ 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 measure it (c) we change it
18. 18.True or false: yeast is needed for the periscope. (a) False (b) True
19. 19.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a balloon (c) two small mirrors (d) an empty juice carton
20. 20.⚖️ 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 change it (c) we measure it
21. 21.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) the ground (d) taller walls
22. 22.True or false: a rough wooden board reflects light poorly. (a) True (b) False
23. 23.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) turmeric powder (d) sticky tape
24. 24.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 10 degrees (d) 90 degrees
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) an empty juice carton (d) a magnet
27. 27.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a rough wooden board (d) aluminium foil
28. 28.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) a shiny steel plate (d) black cloth
29. 29.⚖️ 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
30. 30.🔭 How many mirrors does a simple periscope use?
31. 31.⚖️ 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
32. 32.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) a dull brick (d) a rough wooden board
33. 33.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) aluminium foil (d) black cloth
34. 34.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
35. 35.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see germs (d) see over a wall
36. 36.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) sticky tape (c) two small mirrors (d) a ruler
38. 38.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) a battery cell (d) an empty juice carton
39. 39.True or false: dark soil reflects light poorly. (a) False (b) True
40. 40.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) broken glass bits (d) loose glass panes

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