Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 508 · 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) a magnet (b) an empty juice carton (c) two small mirrors (d) a pencil
2. 2.🔭 How many times does light bounce off a mirror in a simple periscope?
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same light (c) the same carton (d) the angle of the mirrors
4. 4.True or false: a shiny steel plate reflects light well. (a) True (b) False
5. 5.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
6. 6.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
9. 9.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
10. 10.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
11. 11.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) a rough wooden board (d) a dull brick
12. 12.⚖️ 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
13. 13.🧺 Which of these is needed for the periscope? (a) a magnet (b) a pencil (c) a battery cell (d) turmeric powder
14. 14.True or false: a magnet is needed for the periscope. (a) False (b) True
15. 15.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) turmeric powder (d) a pencil
16. 16.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) a ruler (d) a battery cell
17. 17.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
18. 18.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a battery cell (d) a pencil
21. 21.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
22. 22.⚖️ 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) the same mirrors (c) the same light (d) how clear the view is
23. 23.⚖️ 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 change it (b) we measure it (c) we keep it the same
24. 24.True or false: a battery cell is not needed for the periscope. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) a mirror (d) a shiny steel plate
26. 26.🔭 How many mirrors does a simple periscope use?
27. 27.🔭 Which of these reflects light well? (a) aluminium foil (b) black cloth (c) dark soil (d) a dull brick
28. 28.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) taller walls (d) the ground
29. 29.True or false: still clear water reflects light poorly. (a) True (b) False
30. 30.True or false: aluminium foil reflects light poorly. (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.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
33. 33.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) a magnet (d) sticky tape
34. 34.True or false: a ruler 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) a pencil (c) a ruler (d) vinegar
36. 36.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
37. 37.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) yeast (c) two small mirrors (d) a magnet
38. 38.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) dark soil (d) a shiny steel plate
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a balloon (d) an empty juice carton

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