Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 588 · 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.⚖️ 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
2. 2.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
3. 3.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) a dull brick (d) a shiny steel plate
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits
6. 6.⚖️ 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 change it (b) we measure it (c) we keep it the same
7. 7.🔍 Which is the odd one out? (a) still clear water (b) a dull brick (c) a mirror (d) a shiny steel plate
8. 8.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) a magnet (d) a ruler
9. 9.True or false: a magnet is needed for the periscope. (a) False (b) True
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) how clear the view is (c) the angle of the mirrors (d) the same mirrors
11. 11.True or false: a rough wooden board reflects light well. (a) False (b) True
12. 12.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
13. 13.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
14. 14.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) yeast (c) a pencil (d) sticky tape
16. 16.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) reflection (c) refraction (d) evaporation
19. 19.⚖️ 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
20. 20.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
21. 21.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a battery cell (d) a ruler
23. 23.🔮 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
24. 24.True or false: a ruler is not needed for the periscope. (a) False (b) True
25. 25.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
26. 26.True or false: a dull brick reflects light poorly. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) a dull brick (d) a rough wooden board
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
29. 29.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) black cloth (d) a shiny steel plate
30. 30.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
31. 31.True or false: aluminium foil reflects light poorly. (a) True (b) False
32. 32.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) taller walls (d) only short walls
33. 33.🔭 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
34. 34.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) aluminium foil (d) a rough wooden board
35. 35.True or false: a battery cell is needed for the periscope. (a) True (b) False
36. 36.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
37. 37.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) aluminium foil (d) dark soil
38. 38.⚖️ 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) False (b) True
39. 39.🧺 Which of these is needed for the periscope? (a) yeast (b) turmeric powder (c) a ruler (d) a magnet
40. 40.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a mirror (d) a rough wooden board

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