Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 354 · 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 of these is needed for the periscope? (a) two small mirrors (b) yeast (c) turmeric powder (d) a magnet
2. 2.🧺 Which of these is not needed for the periscope? (a) vinegar (b) two small mirrors (c) a ruler (d) an empty juice carton
3. 3.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) 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) False (b) True
5. 5.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
6. 6.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
7. 7.🔭 How many mirrors does a simple periscope use?
8. 8.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) hear far sounds (d) see in the dark
9. 9.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) a rainbow (d) two pictures
10. 10.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.True or false: still clear water reflects light well. (a) True (b) False
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a magnet (d) an empty juice carton
13. 13.True or false: a shiny steel plate reflects light well. (a) False (b) True
14. 14.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
15. 15.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) still clear water (d) black cloth
17. 17.⚖️ 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 measure it (c) we keep it the same
18. 18.⚖️ 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 change it (c) we measure it
19. 19.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) still clear water (d) a dull brick
20. 20.True or false: two small mirrors is needed for the periscope. (a) True (b) False
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
23. 23.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
24. 24.🧺 Which of these is needed for the periscope? (a) a battery cell (b) an empty juice carton (c) vinegar (d) a balloon
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a battery cell (d) an empty juice carton
26. 26.📘 Light bouncing off a mirror is called ___. (a) refraction (b) reflection (c) evaporation (d) magnetism
27. 27.True or false: a magnet is needed for the periscope. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) a dull brick (d) a mirror
29. 29.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same mirrors (c) the same light (d) the same carton
31. 31.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) an empty juice carton (c) a pencil (d) two small mirrors
32. 32.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
33. 33.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a dull brick (d) a mirror
34. 34.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) a rough wooden board (d) dark soil
37. 37.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) taller walls (d) the ground
38. 38.⚖️ 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
39. 39.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
40. 40.⚖️ 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 measure it (b) we change it (c) we keep it the same

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