Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 962 · 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 mirror reflects light poorly. (a) False (b) True
2. 2.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
3. 3.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
4. 4.⚖️ 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
5. 5.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a shiny steel plate (c) a mirror (d) still clear water
6. 6.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.🔭 How many mirrors does a simple periscope use?
8. 8.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the angle of the mirrors (c) the same carton (d) the same light
10. 10.True or false: black cloth reflects light poorly. (a) False (b) True
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we keep it the same (c) we measure it
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a balloon (c) a ruler (d) two small mirrors
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a magnet (d) sticky tape
14. 14.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) flipped left to right (d) upside down only
15. 15.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) to make it heavy (d) so it can float
16. 16.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
17. 17.True or false: black cloth reflects light well. (a) True (b) False
18. 18.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) broken glass bits (d) big wall mirrors
19. 19.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.🔭 Which of these reflects light well? (a) dark soil (b) a shiny steel plate (c) black cloth (d) a rough wooden board
21. 21.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) an empty juice carton (d) turmeric powder
22. 22.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) only short walls (d) the ground
23. 23.🧺 Which of these is needed for the periscope? (a) a magnet (b) a pencil (c) turmeric powder (d) vinegar
24. 24.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a shiny steel plate (d) dark soil
25. 25.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) reflection (d) magnetism
26. 26.True or false: a balloon is not needed for the periscope. (a) True (b) False
27. 27.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.True or false: a rough wooden board reflects light poorly. (a) True (b) False
29. 29.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
30. 30.🔭 How many times does light bounce off a mirror in a simple periscope?
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) a magnet (d) two small mirrors
33. 33.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a submarine crew (d) a farmer
34. 34.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) see germs (d) hear far sounds
35. 35.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.⚖️ 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 mirrors
37. 37.True or false: two small mirrors is needed for the periscope. (a) False (b) True
38. 38.True or false: a dull brick reflects light poorly. (a) False (b) True
39. 39.True or false: yeast is needed for the periscope. (a) True (b) False
40. 40.🔭 Which of these reflects light poorly? (a) aluminium foil (b) dark soil (c) a mirror (d) still clear water

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