Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 234 · 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.⚖️ 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 measure it (b) we keep it the same (c) we change it
2. 2.True or false: a ruler is not needed for the periscope. (a) False (b) True
3. 3.True or false: black cloth reflects light poorly. (a) True (b) False
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) dark soil (d) a mirror
6. 6.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
7. 7.True or false: yeast is not needed for the periscope. (a) False (b) True
8. 8.🔭 Which of these reflects light poorly? (a) black cloth (b) aluminium foil (c) still clear water (d) a shiny steel plate
9. 9.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) a balloon (d) two small mirrors
10. 10.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) sticky tape (d) a balloon
11. 11.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
12. 12.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
13. 13.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) black cloth (d) still clear water
14. 14.⚖️ 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) how clear the view is (c) the object we look at
15. 15.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see over a wall (d) see in the dark
16. 16.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a rough wooden board (d) a shiny steel plate
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) two small mirrors (d) a pencil
18. 18.🔭 How many times does light bounce off a mirror in a simple periscope?
19. 19.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
20. 20.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) dark soil (d) aluminium foil
21. 21.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 10 degrees (d) 45 degrees
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.🔍 Which is the odd one out? (a) a shiny steel plate (b) dark soil (c) aluminium foil (d) a mirror
24. 24.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
25. 25.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a magnet (c) two small mirrors (d) a pencil
26. 26.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a friend’s toy (d) a wall
27. 27.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) a dull brick (d) aluminium foil
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.True or false: a pencil is needed for the periscope. (a) True (b) False
30. 30.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.⚖️ 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 mirrors (c) the object we look at (d) the angle of the mirrors
32. 32.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) still clear water (d) a dull brick
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a magnet (d) an empty juice carton
34. 34.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) only short walls (d) nothing at all
35. 35.True or false: a shiny steel plate reflects light well. (a) False (b) True
36. 36.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) evaporation (d) refraction
37. 37.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) a shiny steel plate (d) a mirror
38. 38.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) plastic safety mirrors (d) big wall mirrors
39. 39.⚖️ 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
40. 40.True or false: a balloon is needed for the periscope. (a) True (b) False

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