Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 205 · 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.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) still clear water (d) a shiny steel plate
2. 2.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) upside down only (d) much bigger
3. 3.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) to make it heavy (d) so light reaches the eye
4. 4.True or false: dark soil reflects light poorly. (a) True (b) False
5. 5.🔭 Which of these reflects light well? (a) dark soil (b) still clear water (c) a dull brick (d) a rough wooden board
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) yeast (c) two small mirrors (d) a ruler
8. 8.True or false: a mirror reflects light well. (a) True (b) False
9. 9.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 180 degrees (d) 90 degrees
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) how clear the view is (c) the same light (d) the same carton
11. 11.⚖️ 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) the object we look at (d) the same carton
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a battery cell (c) sticky tape (d) a pencil
13. 13.⚖️ 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 change it (c) we measure it
14. 14.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a shiny steel plate (d) a rough wooden board
15. 15.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
16. 16.True or false: a dull brick reflects light poorly. (a) True (b) False
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same light
19. 19.⚖️ 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 measure it (b) we change it (c) we keep it the same
20. 20.True or false: a pencil is needed for the periscope. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) black cloth (d) a rough wooden board
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.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.🔭 How many times does light bounce off a mirror in a simple periscope?
25. 25.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) only short walls (d) taller walls
26. 26.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a magnet (c) a ruler (d) two small mirrors
28. 28.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
29. 29.True or false: a rough wooden board reflects light well. (a) True (b) False
30. 30.🔭 Which of these reflects light well? (a) a rough wooden board (b) a mirror (c) dark soil (d) a dull brick
31. 31.True or false: yeast is not needed for the periscope. (a) False (b) True
32. 32.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a friend’s toy (d) a wall
33. 33.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) turmeric powder (c) a balloon (d) a battery cell
34. 34.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) sticky tape (d) a balloon
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) a balloon
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same mirrors
37. 37.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) black cloth (d) aluminium foil
38. 38.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
39. 39.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) still clear water (d) a rough wooden board
40. 40.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a farmer (d) a pilot in a plane

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