Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 303 · 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) two small mirrors (b) yeast (c) a ruler (d) an empty juice carton
2. 2.⚖️ 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) how clear the view is (c) the angle of the mirrors (d) the object we look at
3. 3.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a pilot in a plane (d) a submarine crew
4. 4.True or false: still clear water reflects light poorly. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) a rough wooden board (d) a dull brick
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) turmeric powder (d) two small mirrors
7. 7.⚖️ 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) False (b) True
8. 8.⚖️ 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) False (b) True
9. 9.⚖️ 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
10. 10.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
11. 11.🛟 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
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.⚖️ 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
14. 14.⚖️ 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 change it (b) we measure it (c) we keep it the same
15. 15.True or false: sticky tape is not needed for the periscope. (a) False (b) True
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) sticky tape (c) a pencil (d) a ruler
17. 17.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
18. 18.True or false: still clear water reflects light well. (a) True (b) False
19. 19.⚖️ 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
20. 20.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) reflection (c) refraction (d) evaporation
21. 21.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
22. 22.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see over a wall (d) see germs
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 measure it (b) we keep it the same (c) we change it
24. 24.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
25. 25.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) a rough wooden board (d) a mirror
26. 26.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
27. 27.🔭 How many mirrors does a simple periscope use?
28. 28.True or false: dark soil reflects light well. (a) True (b) False
29. 29.True or false: sticky tape is needed for the periscope. (a) False (b) True
30. 30.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
31. 31.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
32. 32.🧺 Which of these is needed for the periscope? (a) yeast (b) a battery cell (c) a balloon (d) a pencil
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a magnet (d) sticky tape
34. 34.⚖️ 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
35. 35.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) dark soil (c) aluminium foil (d) still clear water
36. 36.⚖️ 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
37. 37.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) yeast (c) two small mirrors (d) vinegar
39. 39.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) aluminium foil (d) dark soil
40. 40.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) aluminium foil (d) a rough wooden board

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