Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 375 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) two small mirrors (c) sticky tape (d) an empty juice carton
2. 2.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) two pictures (d) only darkness
3. 3.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
4. 4.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) still clear water (b) a dull brick (c) black cloth (d) a rough wooden board
7. 7.⚖️ 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
8. 8.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
9. 9.🔭 Which of these reflects light well? (a) black cloth (b) a shiny steel plate (c) a dull brick (d) a rough wooden board
10. 10.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
11. 11.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
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) the same light (b) the angle of the mirrors (c) the same mirrors (d) the object we look at
13. 13.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) aluminium foil (d) a dull brick
14. 14.⚖️ 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 change it (c) we measure it
15. 15.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a magnet (c) sticky tape (d) a pencil
17. 17.True or false: a shiny steel plate reflects light well. (a) True (b) False
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) vinegar (c) a pencil (d) an empty juice carton
19. 19.🔭 How many times does light bounce off a mirror in a simple periscope?
20. 20.True or false: aluminium foil reflects light well. (a) False (b) True
21. 21.True or false: a pencil is not needed for the periscope. (a) True (b) False
22. 22.⚖️ 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
23. 23.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a battery cell (c) an empty juice carton (d) yeast
24. 24.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) sticky tape (d) a magnet
25. 25.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) nothing at all (d) taller walls
26. 26.True or false: a mirror reflects light well. (a) False (b) True
27. 27.⚖️ 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 keep it the same (c) we measure it
28. 28.⚖️ 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
29. 29.True or false: turmeric powder is needed for the periscope. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) black cloth
31. 31.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) see in the dark (d) hear far sounds
32. 32.⚖️ 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
33. 33.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) loose glass panes (d) big wall mirrors
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) True (b) False
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
36. 36.True or false: a dull brick reflects light well. (a) True (b) False
37. 37.🔭 Which of these reflects light well? (a) still clear water (b) a dull brick (c) dark soil (d) a rough wooden board
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
39. 39.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a baker (d) a submarine crew
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) how clear the view is (c) the object we look at (d) the same carton

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