Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 366 · 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 not needed for the periscope? (a) two small mirrors (b) vinegar (c) an empty juice carton (d) a pencil
2. 2.True or false: a mirror reflects light poorly. (a) True (b) False
3. 3.⚖️ 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 change it (c) we keep it the same
4. 4.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) loose glass panes (d) big wall mirrors
5. 5.True or false: dark soil reflects light well. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) black cloth (d) a shiny steel plate
7. 7.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
8. 8.🧺 Which of these is needed for the periscope? (a) a magnet (b) a pencil (c) vinegar (d) turmeric powder
9. 9.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
10. 10.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a dull brick (d) a mirror
11. 11.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) a pencil (c) two small mirrors (d) sticky tape
12. 12.True or false: a rough wooden board reflects light well. (a) False (b) True
13. 13.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.⚖️ 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 measure it (c) we change it
15. 15.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) black cloth (d) a mirror
16. 16.⚖️ 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
17. 17.🔭 How many mirrors does a simple periscope use?
18. 18.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
19. 19.⚖️ 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
20. 20.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a dull brick (c) still clear water (d) a mirror
21. 21.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
22. 22.🔮 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
23. 23.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
24. 24.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
25. 25.⚖️ 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 angle of the mirrors (c) the same mirrors (d) how clear the view is
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
27. 27.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) a magnet (d) two small mirrors
28. 28.True or false: yeast is needed for the periscope. (a) True (b) False
29. 29.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) taller walls (d) nothing at all
30. 30.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a rough wooden board (d) still clear water
31. 31.True or false: aluminium foil reflects light poorly. (a) True (b) False
32. 32.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a balloon (c) sticky tape (d) two small mirrors
33. 33.True or false: vinegar is needed for the periscope. (a) False (b) True
34. 34.⚖️ 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 change it (c) we measure it
35. 35.True or false: a mirror reflects light well. (a) False (b) True
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) an empty juice carton (c) a ruler (d) sticky tape
37. 37.🔭 How many times does light bounce off a mirror in a simple periscope?
38. 38.True or false: a shiny steel plate reflects light well. (a) True (b) False
39. 39.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) so light reaches the eye (d) to make it heavy
40. 40.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed

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