Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 632 · 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.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
2. 2.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
3. 3.True or false: a dull brick reflects light poorly. (a) False (b) True
4. 4.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
5. 5.🧺 Which of these is not needed for the periscope? (a) a magnet (b) an empty juice carton (c) two small mirrors (d) a pencil
6. 6.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
7. 7.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
8. 8.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
9. 9.⚖️ 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 measure it (c) we keep it the same
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a magnet (d) sticky tape
11. 11.⚖️ 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 same mirrors (c) how clear the view is (d) the angle of the mirrors
12. 12.True or false: vinegar is needed for the periscope. (a) False (b) True
13. 13.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.🛟 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
15. 15.⚖️ 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
16. 16.True or false: a balloon is needed for the periscope. (a) False (b) True
17. 17.⚖️ 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
18. 18.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 180 degrees (d) 90 degrees
19. 19.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
20. 20.🔭 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
21. 21.⚖️ 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) how clear the view is (c) the same carton (d) the same light
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) vinegar (d) sticky tape
23. 23.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) black cloth (d) a mirror
24. 24.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) a pencil (c) a ruler (d) an empty juice carton
25. 25.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) much bigger (d) upside down only
26. 26.⚖️ 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 object we look at (c) how clear the view is
27. 27.🔭 How many mirrors does a simple periscope use?
28. 28.True or false: a ruler is needed for the periscope. (a) False (b) True
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a pencil (c) sticky tape (d) an empty juice carton
30. 30.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
31. 31.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) nothing at all (d) the ground
32. 32.🧺 Which of these is needed for the periscope? (a) a balloon (b) an empty juice carton (c) a battery cell (d) yeast
33. 33.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see over a wall (d) see in the dark
34. 34.🔭 How many times does light bounce off a mirror in a simple periscope?
35. 35.True or false: a mirror reflects light well. (a) True (b) False
36. 36.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
37. 37.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) yeast (d) two small mirrors
38. 38.True or false: a ruler is not needed for the periscope. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) aluminium foil (d) still clear water
40. 40.⚖️ 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 change it (c) we measure it

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