Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 358 · 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.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
2. 2.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
3. 3.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
4. 4.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a farmer (d) a submarine crew
5. 5.True or false: a shiny steel plate reflects light well. (a) True (b) False
6. 6.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
7. 7.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
8. 8.⚖️ 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 change it (c) we keep it the same
9. 9.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) True (b) False
11. 11.True or false: a mirror reflects light well. (a) True (b) False
12. 12.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
13. 13.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) black cloth (d) a mirror
14. 14.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
15. 15.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
16. 16.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) only darkness (d) a rainbow
17. 17.True or false: vinegar is needed for the periscope. (a) True (b) False
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a battery cell (d) a pencil
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) turmeric powder (c) an empty juice carton (d) a ruler
20. 20.🔭 Which of these reflects light well? (a) aluminium foil (b) a dull brick (c) black cloth (d) a rough wooden board
21. 21.🔭 How many times does light bounce off a mirror in a simple periscope?
22. 22.True or false: still clear water reflects light poorly. (a) True (b) False
23. 23.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
24. 24.True or false: dark soil reflects light well. (a) True (b) False
25. 25.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) a magnet (d) an empty juice carton
26. 26.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) flipped left to right (d) upside down only
27. 27.⚖️ 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
28. 28.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 180 degrees (d) 10 degrees
29. 29.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
30. 30.⚖️ 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 carton (c) how clear the view is (d) the same light
31. 31.🧺 Which of these is needed for the periscope? (a) yeast (b) a battery cell (c) a ruler (d) a balloon
32. 32.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) to make it heavy (d) so it can float
33. 33.⚖️ 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
34. 34.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) reflection (d) evaporation
35. 35.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) dark soil
36. 36.⚖️ 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
37. 37.True or false: a dull brick reflects light poorly. (a) False (b) True
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
39. 39.⚖️ 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) True (b) False
40. 40.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) black cloth (d) dark soil

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