Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 647 · 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) still clear water (b) a rough wooden board (c) a shiny steel plate (d) aluminium foil
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) an empty juice carton (d) two small mirrors
3. 3.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
5. 5.🔮 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
6. 6.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 45 degrees (d) 180 degrees
7. 7.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
8. 8.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the same mirrors (c) the object we look at (d) how clear the view is
10. 10.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
12. 12.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
15. 15.🔭 How many times does light bounce off a mirror in a simple periscope?
16. 16.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
17. 17.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
18. 18.🔭 Which of these reflects light poorly? (a) a dull brick (b) a mirror (c) still clear water (d) a shiny steel plate
19. 19.True or false: a mirror reflects light poorly. (a) True (b) False
20. 20.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
21. 21.True or false: a dull brick reflects light poorly. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) still clear water (d) dark soil
23. 23.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
24. 24.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.True or false: a magnet is needed for the periscope. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) a shiny steel plate (d) still clear water
28. 28.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
29. 29.⚖️ 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 keep it the same (c) we change it
30. 30.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) an empty juice carton (d) a magnet
31. 31.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
32. 32.True or false: a rough wooden board reflects light well. (a) True (b) False
33. 33.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) much bigger (d) in colour
34. 34.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a mirror (d) a rough wooden board
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) yeast (c) two small mirrors (d) a ruler
36. 36.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
37. 37.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) black cloth
38. 38.🧺 Which of these is needed for the periscope? (a) a pencil (b) a magnet (c) a balloon (d) turmeric powder
39. 39.🧺 Which of these is not needed for the periscope? (a) yeast (b) two small mirrors (c) a ruler (d) an empty juice carton
40. 40.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a dull brick (d) a shiny steel plate

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