Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 417 · 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.🔭 How many mirrors does a simple periscope use?
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a ruler (c) an empty juice carton (d) sticky tape
3. 3.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a farmer (d) a pilot in a plane
4. 4.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so light reaches the eye (d) so it can float
5. 5.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) yeast (c) vinegar (d) a pencil
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a battery cell (d) sticky tape
7. 7.🧺 Which of these is not needed for the periscope? (a) vinegar (b) two small mirrors (c) sticky tape (d) an empty juice carton
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) an empty juice carton (d) a magnet
9. 9.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) vinegar (c) yeast (d) turmeric powder
10. 10.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
11. 11.⚖️ 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 same light (c) how clear the view is (d) the object we look at
12. 12.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 10 degrees (c) 180 degrees (d) 90 degrees
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a pencil (d) a balloon
15. 15.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
16. 16.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
17. 17.True or false: black cloth reflects light well. (a) False (b) True
18. 18.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
19. 19.True or false: aluminium foil reflects light well. (a) False (b) True
20. 20.⚖️ 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) False (b) True
21. 21.True or false: turmeric powder is needed for the periscope. (a) True (b) False
22. 22.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see germs (d) see over a wall
23. 23.True or false: a magnet is needed for the periscope. (a) True (b) False
24. 24.🔭 How many times does light bounce off a mirror in a simple periscope?
25. 25.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) broken glass bits (d) loose glass panes
26. 26.🧺 Which of these is needed for the periscope? (a) a ruler (b) yeast (c) a balloon (d) a magnet
27. 27.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a friend’s toy (d) a wall
28. 28.🛟 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
29. 29.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
30. 30.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) sticky tape (d) turmeric powder
31. 31.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) a brighter view (d) two pictures
32. 32.⚖️ 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 keep it the same (b) we measure it (c) we change it
33. 33.True or false: a dull brick reflects light poorly. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) black cloth (d) still clear water
35. 35.True or false: sticky tape is not needed for the periscope. (a) True (b) False
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.True or false: a dull brick reflects light well. (a) True (b) False
38. 38.True or false: vinegar is not needed for the periscope. (a) True (b) False
39. 39.⚖️ 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 keep it the same (b) we measure it (c) we change it
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) yeast (d) two small mirrors

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