Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 61 · 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.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) much bigger (d) flipped left to right
2. 2.🔍 Which is the odd one out? (a) a shiny steel plate (b) a rough wooden board (c) a dull brick (d) dark soil
3. 3.True or false: a battery cell is not needed for the periscope. (a) False (b) True
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) two small mirrors (d) a magnet
5. 5.⚖️ 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 carton (c) the same mirrors (d) the angle of the mirrors
6. 6.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a battery cell (c) sticky tape (d) two small mirrors
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 measure it (b) we change it (c) we keep it the same
8. 8.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) sticky tape (d) a battery cell
10. 10.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a battery cell (c) turmeric powder (d) vinegar
11. 11.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
12. 12.🛟 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
13. 13.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) a tree (d) the Sun
14. 14.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
15. 15.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
16. 16.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
17. 17.⚖️ 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
18. 18.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) a rough wooden board (d) aluminium foil
19. 19.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
20. 20.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
21. 21.True or false: a pencil is not needed for the periscope. (a) True (b) False
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
23. 23.True or false: aluminium foil reflects light well. (a) True (b) False
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) vinegar (d) sticky tape
25. 25.🔍 Which is the odd one out? (a) dark soil (b) still clear water (c) a mirror (d) aluminium foil
26. 26.True or false: a ruler is not needed for the periscope. (a) True (b) False
27. 27.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a balloon (c) two small mirrors (d) a ruler
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) a dull brick (d) still clear water
31. 31.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a farmer (d) a baker
33. 33.🔭 How many mirrors does a simple periscope use?
34. 34.⚖️ 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 angle of the mirrors (c) the same light
35. 35.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) vinegar (c) a ruler (d) sticky tape
36. 36.⚖️ 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
37. 37.⚖️ 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) the same carton (c) the angle of the mirrors (d) how clear the view is
38. 38.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
39. 39.🔭 How many times does light bounce off a mirror in a simple periscope?
40. 40.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly

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