Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 595 · 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.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
2. 2.True or false: a rough wooden board reflects light well. (a) True (b) False
3. 3.True or false: sticky tape is not needed for the periscope. (a) True (b) False
4. 4.True or false: black cloth reflects light well. (a) False (b) True
5. 5.True or false: aluminium foil reflects light well. (a) True (b) False
6. 6.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 10 degrees (c) 180 degrees (d) 90 degrees
7. 7.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) black cloth (d) aluminium foil
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a magnet (d) sticky tape
9. 9.🔭 How many times does light bounce off a mirror in a simple periscope?
10. 10.⚖️ 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 object we look at (c) the angle of the mirrors
11. 11.True or false: a pencil is not needed for the periscope. (a) True (b) False
12. 12.True or false: a shiny steel plate reflects light well. (a) False (b) True
13. 13.⚖️ 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) True (b) False
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) two small mirrors (d) a balloon
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) how clear the view is (c) the angle of the mirrors
16. 16.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) a rough wooden board (d) a dull brick
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) vinegar (d) two small mirrors
18. 18.🔭 Which of these reflects light well? (a) still clear water (b) black cloth (c) a rough wooden board (d) dark soil
19. 19.⚖️ 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 measure it (b) we keep it the same (c) we change it
20. 20.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) the ground (d) only short walls
21. 21.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
22. 22.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
23. 23.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
24. 24.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) hear far sounds (d) see over a wall
25. 25.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a farmer (d) a submarine crew
26. 26.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) reflection (d) magnetism
27. 27.⚖️ 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 change it (c) we keep it the same
28. 28.True or false: a dull brick reflects light poorly. (a) False (b) True
29. 29.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
30. 30.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) big wall mirrors (d) loose glass panes
31. 31.True or false: a ruler is not needed for the periscope. (a) True (b) False
32. 32.True or false: a balloon is needed for the periscope. (a) True (b) False
33. 33.⚖️ 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
34. 34.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
35. 35.⚖️ 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) True (b) False
36. 36.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a rough wooden board (d) a mirror
37. 37.True or false: a battery cell is needed for the periscope. (a) True (b) False
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same mirrors (c) the angle of the mirrors (d) the same light
39. 39.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
40. 40.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) a shiny steel plate (d) a mirror

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