Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 856 · 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: a ruler is not needed for the periscope. (a) False (b) True
2. 2.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
3. 3.True or false: a rough wooden board reflects light poorly. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) a rough wooden board (d) dark soil
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a balloon (c) a pencil (d) sticky tape
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a magnet (c) an empty juice carton (d) two small mirrors
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) how clear the view is (c) the angle of the mirrors (d) the object we look at
8. 8.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) a rough wooden board (d) a dull brick
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
10. 10.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
11. 11.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a balloon (c) sticky tape (d) a pencil
12. 12.True or false: a rough wooden board reflects light well. (a) True (b) False
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) two small mirrors (d) yeast
14. 14.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a rainbow (d) a brighter view
15. 15.True or false: vinegar is not needed for the periscope. (a) True (b) False
16. 16.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a magnet (c) a ruler (d) an empty juice carton
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same light (c) the angle of the mirrors (d) the same carton
18. 18.⚖️ 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 change it (c) we keep it the same
19. 19.⚖️ 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
20. 20.True or false: aluminium foil reflects light poorly. (a) True (b) False
21. 21.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) vinegar (c) two small mirrors (d) sticky tape
22. 22.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a dull brick (d) still clear water
23. 23.⚖️ 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
24. 24.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
25. 25.⚖️ 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) the same carton (c) how clear the view is
26. 26.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a submarine crew (d) a pilot in a plane
27. 27.⚖️ 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) the same light (c) how clear the view is
28. 28.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a balloon (c) a battery cell (d) turmeric powder
29. 29.True or false: a dull brick reflects light poorly. (a) False (b) True
30. 30.True or false: dark soil reflects light well. (a) True (b) False
31. 31.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
32. 32.⚖️ 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) True (b) False
33. 33.⚖️ 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 keep it the same (c) we measure it
34. 34.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.🔭 How many times does light bounce off a mirror in a simple periscope?
36. 36.🔮 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
37. 37.⚖️ 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
38. 38.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a dull brick (d) a shiny steel plate
39. 39.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
40. 40.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 180 degrees (d) 10 degrees

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