Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 619 · 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: black cloth reflects light poorly. (a) False (b) True
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
4. 4.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) a brighter view (d) only darkness
6. 6.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
7. 7.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) yeast (c) a magnet (d) a balloon
8. 8.🔭 How many times does light bounce off a mirror in a simple periscope?
9. 9.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) turmeric powder (c) two small mirrors (d) a pencil
10. 10.⚖️ 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) how clear the view is (d) the angle of the mirrors
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a ruler (d) a battery cell
12. 12.🔭 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
13. 13.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) two small mirrors (d) yeast
14. 14.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
15. 15.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a submarine crew (d) a baker
16. 16.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
17. 17.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) dark soil (d) a shiny steel plate
18. 18.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) a dull brick (d) still clear water
19. 19.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) nothing at all (d) taller walls
20. 20.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
21. 21.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a dull brick (d) a mirror
22. 22.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
23. 23.True or false: a ruler is needed for the periscope. (a) True (b) False
24. 24.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.🧺 Which of these is needed for the periscope? (a) vinegar (b) a pencil (c) a magnet (d) yeast
28. 28.⚖️ 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
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a pencil (c) two small mirrors (d) an empty juice carton
30. 30.True or false: aluminium foil reflects light well. (a) False (b) True
31. 31.⚖️ 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
32. 32.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) black cloth (d) still clear water
33. 33.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a dull brick (d) still clear water
34. 34.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
35. 35.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a pencil (c) sticky tape (d) an empty juice carton
37. 37.⚖️ 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 mirrors (b) how clear the view is (c) the angle of the mirrors (d) the same carton
38. 38.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
39. 39.True or false: two small mirrors is needed for the periscope. (a) False (b) True
40. 40.⚖️ 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

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