Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 713 · 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.⚖️ 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
2. 2.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
3. 3.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) turmeric powder (d) an empty juice carton
4. 4.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) big wall mirrors (d) loose glass panes
5. 5.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
6. 6.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a farmer (c) a pilot in a plane (d) a baker
7. 7.🔭 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
8. 8.⚖️ 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) the same carton (c) the angle of the mirrors (d) how clear the view is
9. 9.🔍 Which is the odd one out? (a) a dull brick (b) aluminium foil (c) a shiny steel plate (d) still clear water
10. 10.True or false: a mirror reflects light well. (a) False (b) True
11. 11.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) taller walls (d) the ground
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
14. 14.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) black cloth (d) a shiny steel plate
15. 15.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) an empty juice carton (d) yeast
16. 16.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
17. 17.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) vinegar (d) an empty juice carton
19. 19.⚖️ 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 mirrors (c) the object we look at (d) the angle of the mirrors
20. 20.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) in colour (d) upside down only
21. 21.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.True or false: a mirror reflects light poorly. (a) True (b) False
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a pencil (d) a magnet
24. 24.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) sticky tape (d) a battery cell
25. 25.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) an empty juice carton (d) turmeric powder
27. 27.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a wall (d) a friend’s toy
28. 28.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see germs (d) see in the dark
29. 29.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) a shiny steel plate (d) still clear water
30. 30.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a battery cell (c) sticky tape (d) an empty juice carton
31. 31.⚖️ 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
32. 32.⚖️ 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
33. 33.True or false: two small mirrors is needed for the periscope. (a) False (b) True
34. 34.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) black cloth (d) a shiny steel plate
35. 35.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a battery cell (d) an empty juice carton
37. 37.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a dull brick (d) a shiny steel plate
38. 38.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
39. 39.True or false: black cloth reflects light poorly. (a) False (b) True
40. 40.⚖️ 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

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