Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 718 · 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.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) refraction (d) magnetism
2. 2.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
3. 3.🛟 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
4. 4.⚖️ 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
5. 5.⚖️ 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) how clear the view is (c) the angle of the mirrors (d) the same mirrors
6. 6.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
7. 7.True or false: a magnet is not needed for the periscope. (a) False (b) True
8. 8.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a dull brick (d) still clear water
10. 10.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) yeast (c) an empty juice carton (d) a ruler
11. 11.True or false: dark soil reflects light poorly. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) still clear water (d) a shiny steel plate
13. 13.True or false: a ruler is needed for the periscope. (a) True (b) False
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) yeast (c) sticky tape (d) an empty juice carton
15. 15.True or false: yeast is needed for the periscope. (a) False (b) True
16. 16.True or false: dark soil reflects light well. (a) False (b) True
17. 17.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) to make it heavy (d) so light reaches the eye
18. 18.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) a pencil (d) a magnet
19. 19.⚖️ 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
20. 20.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a dull brick (d) a mirror
21. 21.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
22. 22.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
23. 23.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
24. 24.True or false: vinegar is not needed for the periscope. (a) True (b) False
25. 25.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
26. 26.⚖️ 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 keep it the same (c) we measure it
27. 27.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
28. 28.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) in colour (d) much bigger
29. 29.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) a rough wooden board (d) a mirror
31. 31.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) vinegar (d) an empty juice carton
33. 33.True or false: a dull brick reflects light well. (a) True (b) False
34. 34.⚖️ 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) True (b) False
35. 35.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) aluminium foil (d) a dull brick
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a ruler (d) a battery cell
37. 37.🔮 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
38. 38.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy
39. 39.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a farmer (d) a baker
40. 40.True or false: a balloon is needed for the periscope. (a) True (b) False

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