Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 297 · 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 of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) aluminium foil (d) dark soil
2. 2.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) in colour (d) upside down only
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 same carton (b) the angle of the mirrors (c) the same light (d) how clear the view is
4. 4.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) reflection (d) evaporation
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) a shiny steel plate (d) black cloth
7. 7.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
8. 8.🧺 Which of these is needed for the periscope? (a) a battery cell (b) yeast (c) an empty juice carton (d) vinegar
9. 9.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
10. 10.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a rough wooden board (d) a shiny steel plate
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) an empty juice carton (d) turmeric powder
15. 15.🧺 Which of these is not needed for the periscope? (a) a balloon (b) a ruler (c) sticky tape (d) two small mirrors
16. 16.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) a pencil (d) yeast
17. 17.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) a magnet (d) a pencil
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? What do we do with “the angle of the mirrors”? (a) we change it (b) we keep it the same (c) we measure it
20. 20.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
21. 21.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) dark soil (d) a dull brick
22. 22.⚖️ 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
23. 23.🧺 Which of these is not needed for the periscope? (a) a magnet (b) sticky tape (c) a ruler (d) an empty juice carton
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same carton (c) the object we look at (d) the same mirrors
25. 25.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) a rough wooden board (d) a dull brick
26. 26.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
27. 27.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a tree (d) a friend’s toy
28. 28.⚖️ 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
29. 29.True or false: a pencil is not needed for the periscope. (a) True (b) False
30. 30.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) plastic safety mirrors (d) broken glass bits
31. 31.True or false: dark soil reflects light well. (a) False (b) True
32. 32.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) nothing at all (d) only short walls
33. 33.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) aluminium foil (d) black cloth
34. 34.True or false: sticky tape is needed for the periscope. (a) False (b) True
35. 35.True or false: a ruler is needed for the periscope. (a) False (b) True
36. 36.⚖️ 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
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) yeast (d) a pencil
38. 38.⚖️ 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) False (b) True
39. 39.True or false: a mirror reflects light poorly. (a) False (b) True
40. 40.True or false: a battery cell is needed for the periscope. (a) False (b) True

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