Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 952 · 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.True or false: dark soil reflects light poorly. (a) False (b) True
2. 2.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same mirrors (c) the same carton (d) the angle of the mirrors
4. 4.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) much bigger (d) flipped left to right
6. 6.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) plastic safety mirrors (d) loose glass panes
7. 7.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
8. 8.True or false: a mirror reflects light poorly. (a) True (b) False
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.True or false: still clear water reflects light poorly. (a) False (b) True
11. 11.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) an empty juice carton (c) a ruler (d) sticky tape
13. 13.🔭 How many mirrors does a simple periscope use?
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) True (b) False
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
16. 16.🔭 Which of these reflects light well? (a) a rough wooden board (b) a shiny steel plate (c) a dull brick (d) black cloth
17. 17.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) a rough wooden board (d) a mirror
18. 18.⚖️ 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) False (b) True
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 object we look at (c) the same carton (d) how clear the view is
20. 20.🔭 How many times does light bounce off a mirror in a simple periscope?
21. 21.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
22. 22.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.🔮 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
24. 24.True or false: a battery cell is needed for the periscope. (a) True (b) False
25. 25.True or false: a mirror reflects light well. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) black cloth (d) a shiny steel plate
27. 27.True or false: vinegar is needed for the periscope. (a) True (b) False
28. 28.⚖️ 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 measure it (b) we keep it the same (c) we change it
29. 29.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
30. 30.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
31. 31.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
32. 32.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) refraction (d) magnetism
33. 33.⚖️ 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
34. 34.⚖️ 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 keep it the same (b) we measure it (c) we change it
35. 35.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) taller walls (d) the ground
37. 37.⚖️ 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
38. 38.🛟 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
39. 39.🧺 Which of these is not needed for the periscope? (a) a pencil (b) yeast (c) an empty juice carton (d) a ruler
40. 40.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) a magnet (d) a ruler

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