Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 702 · 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 same light”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) a dull brick (d) dark soil
4. 4.⚖️ 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 same carton
5. 5.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) a dull brick
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) sticky tape (d) yeast
7. 7.⚖️ 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
8. 8.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
9. 9.⚖️ 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 change it (b) we measure it (c) we keep it the same
10. 10.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a battery cell (c) vinegar (d) a balloon
11. 11.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a pilot in a plane (d) a farmer
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) False (b) True
13. 13.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
14. 14.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) vinegar (d) two small mirrors
15. 15.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) loose glass panes (d) broken glass bits
16. 16.⚖️ 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) the object we look at (d) how clear the view is
17. 17.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a mirror (d) a rough wooden board
18. 18.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a wall (d) a friend’s toy
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) False (b) True
20. 20.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
22. 22.🔭 Which of these reflects light poorly? (a) a mirror (b) dark soil (c) a shiny steel plate (d) still clear water
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
24. 24.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so it looks shiny (d) so light reaches the eye
25. 25.🔭 How many mirrors does a simple periscope use?
26. 26.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
28. 28.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) two small mirrors (d) a balloon
30. 30.🔭 Does a rough wooden board 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 mirror (c) a dull brick (d) a shiny steel plate
32. 32.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same carton (b) the same light (c) how clear the view is (d) the angle of the mirrors
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) an empty juice carton (d) a pencil
35. 35.🔭 How many times does light bounce off a mirror in a simple periscope?
36. 36.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
37. 37.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) two pictures (d) a rainbow
38. 38.True or false: a rough wooden board reflects light well. (a) False (b) True
39. 39.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) dark soil (d) still clear water
40. 40.True or false: two small mirrors is not needed for the periscope. (a) False (b) True

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