Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 329 · 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.True or false: a magnet is needed for the periscope. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) dark soil (d) still clear water
3. 3.🔍 Which is the odd one out? (a) dark soil (b) aluminium foil (c) a dull brick (d) black cloth
4. 4.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) a rough wooden board (d) a shiny steel plate
5. 5.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so it looks shiny (d) so light reaches the eye
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.⚖️ 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 light (b) the object we look at (c) the same mirrors (d) the angle of the mirrors
8. 8.⚖️ 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
9. 9.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
10. 10.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.True or false: a dull brick reflects light well. (a) False (b) True
12. 12.🔭 Which of these reflects light well? (a) black cloth (b) a mirror (c) dark soil (d) a dull brick
13. 13.🧺 Which of these is needed for the periscope? (a) yeast (b) a balloon (c) a magnet (d) two small mirrors
14. 14.⚖️ 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
15. 15.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) a brighter view (d) only darkness
16. 16.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
17. 17.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
18. 18.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a magnet (c) a pencil (d) a ruler
19. 19.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) big wall mirrors (d) plastic safety mirrors
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
21. 21.True or false: a ruler is not needed for the periscope. (a) True (b) False
22. 22.⚖️ 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
23. 23.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
24. 24.⚖️ 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
25. 25.True or false: a dull brick reflects light poorly. (a) True (b) False
26. 26.🛟 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
27. 27.🔭 How many times does light bounce off a mirror in a simple periscope?
28. 28.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) black cloth (d) a rough wooden board
29. 29.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) dark soil (d) aluminium foil
30. 30.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
32. 32.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) a ruler (d) yeast
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the same mirrors (c) the angle of the mirrors (d) how clear the view is
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same carton
35. 35.⚖️ 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) True (b) False
36. 36.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) a magnet (d) sticky tape
37. 37.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) dark soil (c) aluminium foil (d) still clear water
38. 38.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) aluminium foil
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a ruler (d) a balloon
40. 40.True or false: a rough wooden board reflects light well. (a) False (b) True

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