Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 50 · 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 ruler (b) vinegar (c) an empty juice carton (d) two small mirrors
2. 2.⚖️ 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
3. 3.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
4. 4.True or false: aluminium foil reflects light poorly. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) a rough wooden board (d) a dull brick
6. 6.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.True or false: a balloon is not needed for the periscope. (a) False (b) True
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a magnet (d) a ruler
9. 9.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a rough wooden board (d) still clear water
10. 10.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
12. 12.True or false: yeast is not needed for the periscope. (a) True (b) False
13. 13.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
14. 14.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) a mirror (d) still clear water
15. 15.🔮 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
16. 16.⚖️ 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 keep it the same (b) we measure it (c) we change it
17. 17.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) dark soil (d) a mirror
18. 18.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) a shiny steel plate (d) still clear water
19. 19.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a submarine crew (d) a baker
20. 20.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
21. 21.True or false: a ruler is needed for the periscope. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a mirror (d) dark soil
23. 23.True or false: a dull brick reflects light poorly. (a) False (b) True
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
25. 25.⚖️ 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 change it (b) we keep it the same (c) we measure it
26. 26.🔭 How many times does light bounce off a mirror in a simple periscope?
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
28. 28.True or false: a magnet is not needed for the periscope. (a) False (b) True
29. 29.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
30. 30.🛟 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
31. 31.🔭 How many mirrors does a simple periscope use?
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) how clear the view is (c) the same carton (d) the angle of the mirrors
33. 33.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees
34. 34.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
35. 35.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) dark soil (d) a dull brick
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) sticky tape (d) a balloon
37. 37.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) a pencil (d) turmeric powder
38. 38.True or false: sticky tape is needed for the periscope. (a) True (b) False
39. 39.⚖️ 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
40. 40.🔮 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

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