Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 582 · 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.🔭 How many times does light bounce off a mirror in a simple periscope?
2. 2.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) an empty juice carton (d) a magnet
3. 3.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
4. 4.🧺 Which of these is needed for the periscope? (a) a magnet (b) vinegar (c) an empty juice carton (d) yeast
5. 5.⚖️ 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 keep it the same (c) we measure it
6. 6.True or false: a dull brick reflects light well. (a) True (b) False
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a battery cell (c) two small mirrors (d) an empty juice carton
8. 8.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) two small mirrors (d) a balloon
10. 10.True or false: black cloth reflects light well. (a) True (b) False
11. 11.True or false: a ruler is needed for the periscope. (a) False (b) True
12. 12.🔭 Which of these reflects light well? (a) a dull brick (b) still clear water (c) a rough wooden board (d) dark soil
13. 13.⚖️ 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 same carton (c) the angle of the mirrors
14. 14.⚖️ 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 light (b) the object we look at (c) the angle of the mirrors (d) the same carton
15. 15.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
16. 16.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
17. 17.🔭 Which of these reflects light poorly? (a) a mirror (b) a dull brick (c) aluminium foil (d) still clear water
18. 18.🔭 How many mirrors does a simple periscope use?
19. 19.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) a mirror (d) a dull brick
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) vinegar (c) sticky tape (d) a pencil
21. 21.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) yeast (d) a pencil
23. 23.True or false: a mirror 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: how clear the view is is the one thing we change. (a) True (b) False
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
26. 26.True or false: turmeric powder is needed for the periscope. (a) False (b) True
27. 27.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
28. 28.🔮 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
29. 29.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) still clear water (c) aluminium foil (d) a shiny steel plate
30. 30.⚖️ 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 keep it the same (b) we measure it (c) we change it
31. 31.🧺 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
32. 32.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) dark soil (d) a rough wooden board
33. 33.True or false: a rough wooden board reflects light poorly. (a) False (b) True
34. 34.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.🔭 Which of these reflects light well? (a) a rough wooden board (b) aluminium foil (c) a dull brick (d) dark soil
36. 36.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) a battery cell (d) an empty juice carton
37. 37.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) black cloth (d) a shiny steel plate
38. 38.⚖️ 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) False (b) True
39. 39.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False

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