Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 94 · 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) evaporation (b) magnetism (c) refraction (d) reflection
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
3. 3.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
4. 4.⚖️ 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 light (c) the same mirrors (d) the same carton
5. 5.🔭 How many times does light bounce off a mirror in a simple periscope?
6. 6.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) yeast (d) a pencil
8. 8.🛟 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
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) sticky tape (d) turmeric powder
10. 10.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
11. 11.🔭 Which of these reflects light well? (a) aluminium foil (b) a rough wooden board (c) dark soil (d) black cloth
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) vinegar (c) a pencil (d) two small mirrors
13. 13.⚖️ 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 keep it the same (b) we change it (c) we measure it
14. 14.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) black cloth (d) a shiny steel plate
15. 15.⚖️ 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
16. 16.🧺 Which of these is needed for the periscope? (a) a pencil (b) turmeric powder (c) a magnet (d) a balloon
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the angle of the mirrors (c) the same mirrors (d) how clear the view is
18. 18.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
19. 19.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees
20. 20.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) dark soil (d) a dull brick
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
24. 24.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
25. 25.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
26. 26.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) aluminium foil (d) a dull brick
27. 27.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) in colour (d) flipped left to right
28. 28.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) aluminium foil (d) a mirror
29. 29.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) dark soil (d) black cloth
30. 30.True or false: turmeric powder is needed for the periscope. (a) True (b) False
31. 31.⚖️ 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 same mirrors (c) the angle of the mirrors
32. 32.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
33. 33.True or false: a magnet is needed for the periscope. (a) False (b) True
34. 34.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
35. 35.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) a mirror (d) a rough wooden board
36. 36.🔭 Which of these reflects light well? (a) a dull brick (b) a mirror (c) black cloth (d) dark soil
37. 37.🔭 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
38. 38.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) sticky tape (d) a balloon
40. 40.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness

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