Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 676 · 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 of these is not needed for the periscope? (a) a balloon (b) sticky tape (c) two small mirrors (d) an empty juice carton
2. 2.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) still clear water (d) dark soil
3. 3.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so it can float (d) so light reaches the eye
4. 4.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view
6. 6.⚖️ 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 mirrors (b) the same carton (c) the angle of the mirrors (d) the same light
7. 7.⚖️ 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
8. 8.True or false: a rough wooden board reflects light well. (a) True (b) False
9. 9.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
10. 10.🔭 How many mirrors does a simple periscope use?
11. 11.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) still clear water
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) in colour (d) upside down only
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a pencil (d) a magnet
16. 16.⚖️ 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 object we look at (d) the same light
17. 17.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) two small mirrors (d) vinegar
18. 18.⚖️ 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
19. 19.⚖️ 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 keep it the same (b) we change it (c) we measure it
20. 20.True or false: yeast is not needed for the periscope. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) a mirror (d) aluminium foil
22. 22.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) a shiny steel plate (d) dark soil
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
24. 24.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a magnet (c) an empty juice carton (d) a pencil
25. 25.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) an empty juice carton (d) turmeric powder
26. 26.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) a mirror (d) a shiny steel plate
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) two small mirrors (c) a ruler (d) a pencil
28. 28.🔭 Which of these reflects light well? (a) aluminium foil (b) a rough wooden board (c) black cloth (d) dark soil
29. 29.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.⚖️ 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
31. 31.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a baker (d) a pilot in a plane
32. 32.True or false: a ruler is not needed for the periscope. (a) True (b) False
33. 33.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) two small mirrors (d) a battery cell
34. 34.True or false: sticky tape is not needed for the periscope. (a) False (b) True
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) yeast (c) sticky tape (d) a pencil
36. 36.⚖️ 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 object we look at (c) the angle of the mirrors
37. 37.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
38. 38.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 45 degrees (d) 10 degrees
39. 39.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) a rough wooden board (d) a mirror
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) vinegar (d) an empty juice carton

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