Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 473 · 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 is the odd one out? (a) still clear water (b) aluminium foil (c) a mirror (d) a dull brick
2. 2.🔮 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
3. 3.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) black cloth (d) a shiny steel plate
4. 4.True or false: black cloth reflects light poorly. (a) False (b) True
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a pencil (d) vinegar
6. 6.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) a ruler (d) turmeric powder
7. 7.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) aluminium foil (d) black cloth
8. 8.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) big wall mirrors (d) broken glass bits
9. 9.⚖️ 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 change it (c) we keep it the same
10. 10.True or false: sticky tape is needed for the periscope. (a) False (b) True
11. 11.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
13. 13.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) a ruler (d) a battery cell
14. 14.📘 Light bouncing off a mirror is called ___. (a) refraction (b) magnetism (c) evaporation (d) reflection
15. 15.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) dark soil (d) aluminium foil
16. 16.🧺 Which of these is needed for the periscope? (a) yeast (b) turmeric powder (c) an empty juice carton (d) a magnet
17. 17.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) True (b) False
19. 19.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) yeast (d) sticky tape
20. 20.🔭 How many times does light bounce off a mirror in a simple periscope?
21. 21.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
22. 22.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) hear far sounds (d) see over a wall
23. 23.True or false: a rough wooden board reflects light well. (a) True (b) False
24. 24.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a pencil (c) a battery cell (d) yeast
25. 25.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) nothing at all (d) taller walls
26. 26.🔭 How many mirrors does a simple periscope use?
27. 27.True or false: a magnet is not needed for the periscope. (a) True (b) False
28. 28.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a magnet (c) two small mirrors (d) an empty juice carton
29. 29.⚖️ 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 mirrors (b) the same light (c) how clear the view is (d) the angle of the mirrors
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) an empty juice carton (c) a ruler (d) two small mirrors
31. 31.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) a mirror (d) a dull brick
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same light (c) the angle of the mirrors (d) the same carton
34. 34.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
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 keep it the same (b) we measure it (c) we change it
36. 36.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) aluminium foil (d) a shiny steel plate
37. 37.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
38. 38.⚖️ 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
39. 39.True or false: a magnet is needed for the periscope. (a) True (b) False
40. 40.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a friend’s toy (d) a wall

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