Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 609 · 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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same mirrors (c) the same carton (d) the angle of the mirrors
2. 2.🔭 Who uses a periscope to look above the water? (a) a baker (b) a pilot in a plane (c) a submarine crew (d) a farmer
3. 3.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) a pencil (d) turmeric powder
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) an empty juice carton (c) a ruler (d) sticky tape
6. 6.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) black cloth (d) aluminium foil
7. 7.⚖️ 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 measure it (b) we change it (c) we keep it the same
8. 8.True or false: a dull brick reflects light well. (a) True (b) False
9. 9.True or false: a dull brick reflects light poorly. (a) False (b) True
10. 10.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the same carton (c) how clear the view is
12. 12.🔭 How many mirrors does a simple periscope use?
13. 13.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) an empty juice carton (d) yeast
14. 14.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) evaporation (d) magnetism
15. 15.🔭 How many times does light bounce off a mirror in a simple periscope?
16. 16.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) in colour (d) flipped left to right
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a ruler (d) yeast
18. 18.True or false: a ruler is not needed for the periscope. (a) False (b) True
19. 19.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a rough wooden board (d) still clear water
20. 20.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
21. 21.🔭 Which of these reflects light well? (a) a rough wooden board (b) a mirror (c) a dull brick (d) dark soil
22. 22.⚖️ 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 object we look at
23. 23.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) a dull brick (d) a shiny steel plate
24. 24.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.True or false: a rough wooden board reflects light poorly. (a) False (b) True
26. 26.True or false: vinegar is not needed for the periscope. (a) True (b) False
27. 27.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) hear far sounds (d) see over a wall
28. 28.🧺 Which of these is needed for the periscope? (a) a magnet (b) an empty juice carton (c) a battery cell (d) a balloon
29. 29.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) aluminium foil (d) a mirror
30. 30.🔭 Which of these reflects light well? (a) a rough wooden board (b) aluminium foil (c) black cloth (d) dark soil
31. 31.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
34. 34.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a battery cell (c) a magnet (d) two small mirrors
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) sticky tape (d) vinegar
37. 37.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) sticky tape (d) two small mirrors
39. 39.True or false: a mirror reflects light well. (a) True (b) False
40. 40.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) vinegar (c) an empty juice carton (d) two small mirrors

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