Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 335 · 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 pencil is not needed for the periscope. (a) False (b) True
2. 2.True or false: sticky tape is not needed for the periscope. (a) True (b) False
3. 3.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
4. 4.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) see germs (d) hear far sounds
5. 5.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
6. 6.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
7. 7.🧺 Which of these is needed for the periscope? (a) yeast (b) turmeric powder (c) a magnet (d) a ruler
8. 8.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) plastic safety mirrors (d) broken glass bits
9. 9.True or false: a balloon is needed for the periscope. (a) True (b) False
10. 10.🔭 Which of these reflects light poorly? (a) aluminium foil (b) black cloth (c) a shiny steel plate (d) a mirror
11. 11.🔭 How many mirrors does a simple periscope use?
12. 12.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
13. 13.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) dark soil (c) a mirror (d) still clear water
14. 14.🔮 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
15. 15.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the object we look at (c) how clear the view is (d) the same carton
17. 17.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.True or false: black cloth reflects light well. (a) True (b) False
20. 20.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) much bigger (d) in colour
21. 21.🔭 How many times does light bounce off a mirror in a simple periscope?
22. 22.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) only short walls (d) taller walls
23. 23.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
24. 24.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
25. 25.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
27. 27.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so it looks shiny (d) so light reaches the eye
28. 28.True or false: a rough wooden board reflects light poorly. (a) False (b) True
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) the object we look at (d) the angle of the mirrors
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) sticky tape (c) a ruler (d) a pencil
31. 31.⚖️ 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
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) False (b) True
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) two small mirrors (d) a balloon
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
37. 37.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
38. 38.True or false: aluminium foil reflects light well. (a) True (b) False
39. 39.True or false: a mirror reflects light poorly. (a) False (b) True
40. 40.⚖️ 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

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