Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 119 · 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 well? (a) black cloth (b) a dull brick (c) still clear water (d) dark soil
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a battery cell (d) a ruler
3. 3.⚖️ 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
4. 4.True or false: a battery cell is needed for the periscope. (a) False (b) True
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) two small mirrors (c) an empty juice carton (d) a pencil
6. 6.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
7. 7.True or false: yeast is needed for the periscope. (a) True (b) False
8. 8.True or false: a dull brick reflects light well. (a) True (b) False
9. 9.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
10. 10.True or false: a battery cell is not needed for the periscope. (a) False (b) True
11. 11.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
13. 13.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
14. 14.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) yeast (d) two small mirrors
15. 15.True or false: a mirror reflects light poorly. (a) True (b) False
16. 16.True or false: a mirror reflects light well. (a) False (b) True
17. 17.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a wall (d) a tree
18. 18.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) a battery cell (d) a pencil
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
20. 20.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
21. 21.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) a rough wooden board (d) a mirror
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) how clear the view is (c) the same carton (d) the same mirrors
23. 23.🔭 How many times does light bounce off a mirror in a simple periscope?
24. 24.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) reflection (d) refraction
25. 25.🔍 Which is the odd one out? (a) black cloth (b) aluminium foil (c) a dull brick (d) a rough wooden board
26. 26.True or false: a pencil is not needed for the periscope. (a) False (b) True
27. 27.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
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 same mirrors (c) the angle of the mirrors
29. 29.🔮 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
30. 30.🔭 Which of these reflects light poorly? (a) a dull brick (b) aluminium foil (c) still clear water (d) a mirror
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
32. 32.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a submarine crew (d) a pilot in a plane
33. 33.🔭 How many mirrors does a simple periscope use?
34. 34.True or false: a pencil is needed for the periscope. (a) False (b) True
35. 35.⚖️ 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 measure it (c) we keep it the same
36. 36.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a shiny steel plate (d) a dull brick
37. 37.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a balloon (c) vinegar (d) turmeric powder
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) vinegar (c) an empty juice carton (d) two small mirrors
39. 39.⚖️ 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
40. 40.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well

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