Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 503 · 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.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
2. 2.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a dull brick (d) a shiny steel plate
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 change it (b) we measure it (c) we keep it the same
4. 4.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) an empty juice carton (c) a ruler (d) two small mirrors
7. 7.🔭 How many mirrors does a simple periscope use?
8. 8.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a rough wooden board (c) still clear water (d) a mirror
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) False (b) True
10. 10.True or false: sticky tape is needed for the periscope. (a) True (b) False
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) a balloon (d) an empty juice carton
12. 12.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
13. 13.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
14. 14.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
15. 15.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
16. 16.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) the ground (d) nothing at all
17. 17.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) a pencil (d) a magnet
18. 18.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) so light reaches the eye (d) to make it heavy
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) the angle of the mirrors (b) the same light (c) how clear the view is (d) the object we look at
20. 20.🔭 How many times does light bounce off a mirror in a simple periscope?
21. 21.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a baker (d) a farmer
22. 22.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) loose glass panes (d) plastic safety mirrors
23. 23.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) see in the dark (d) hear far sounds
24. 24.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) upside down only (d) flipped left to right
25. 25.True or false: a pencil is needed for the periscope. (a) True (b) False
26. 26.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) yeast (d) a ruler
27. 27.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) an empty juice carton (c) a balloon (d) vinegar
28. 28.⚖️ 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
29. 29.⚖️ 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
30. 30.⚖️ 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
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) yeast (c) a ruler (d) an empty juice carton
32. 32.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
33. 33.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
34. 34.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) only darkness (d) a rainbow
35. 35.True or false: a ruler is not needed for the periscope. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) aluminium foil (d) a dull brick
37. 37.⚖️ 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) True (b) False
38. 38.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) still clear water (d) dark soil
39. 39.⚖️ 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
40. 40.⚖️ 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

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