Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 494 · 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.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
2. 2.True or false: a balloon is not needed for the periscope. (a) False (b) True
3. 3.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
4. 4.True or false: a shiny steel plate reflects light well. (a) True (b) False
5. 5.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a farmer (d) a baker
6. 6.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.⚖️ 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 keep it the same (c) we change it
8. 8.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so light reaches the eye (d) so it looks shiny
9. 9.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a balloon (d) a pencil
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
11. 11.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
12. 12.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
13. 13.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
15. 15.True or false: a pencil is not needed for the periscope. (a) False (b) True
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) still clear water (d) a mirror
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
19. 19.🔮 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
20. 20.🛟 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
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 measure it (b) we keep it the same (c) we change it
22. 22.🔍 Which is the odd one out? (a) a shiny steel plate (b) a rough wooden board (c) black cloth (d) dark soil
23. 23.True or false: a rough wooden board reflects light poorly. (a) False (b) True
24. 24.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
25. 25.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) an empty juice carton (d) a balloon
27. 27.True or false: a dull brick reflects light well. (a) True (b) False
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the same carton (c) the angle of the mirrors (d) how clear the view is
29. 29.True or false: a mirror reflects light poorly. (a) True (b) False
30. 30.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
31. 31.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) black cloth (d) a mirror
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
33. 33.True or false: dark soil reflects light poorly. (a) False (b) True
34. 34.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see over a wall (d) see in the dark
35. 35.True or false: yeast is not needed for the periscope. (a) False (b) True
36. 36.🔭 How many mirrors does a simple periscope use?
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a ruler (d) yeast
38. 38.True or false: black cloth reflects light poorly. (a) False (b) True
39. 39.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a rough wooden board (c) a shiny steel plate (d) a mirror
40. 40.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a rough wooden board (d) a mirror

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