Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 769 · 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.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
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) how clear the view is (c) the same light (d) the same carton
5. 5.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) vinegar (c) a pencil (d) an empty juice carton
7. 7.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) a mirror (d) a shiny steel plate
8. 8.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a shiny steel plate (d) a dull brick
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) an empty juice carton (d) a balloon
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same mirrors (c) the same carton (d) the angle of the mirrors
11. 11.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) plastic safety mirrors (d) big wall mirrors
12. 12.⚖️ 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
13. 13.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
14. 14.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) dark soil (d) aluminium foil
15. 15.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) black cloth (d) a dull brick
16. 16.True or false: a dull brick reflects light poorly. (a) True (b) False
17. 17.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
18. 18.🔭 How many times does light bounce off a mirror in a simple periscope?
19. 19.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
20. 20.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a baker (d) a submarine crew
21. 21.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) flipped left to right (d) much bigger
22. 22.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
23. 23.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a battery cell (c) a ruler (d) two small mirrors
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a ruler (c) sticky tape (d) two small mirrors
25. 25.⚖️ 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 keep it the same (c) we change it
26. 26.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) a shiny steel plate (d) still clear water
27. 27.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) a ruler (d) yeast
28. 28.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) hear far sounds (d) see germs
29. 29.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so light reaches the eye (d) so it looks shiny
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) two small mirrors (c) sticky tape (d) an empty juice carton
31. 31.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) aluminium foil (d) still clear water
32. 32.True or false: a battery cell is needed for the periscope. (a) True (b) False
33. 33.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) taller walls (d) the ground
34. 34.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a shiny steel plate (d) a dull brick
35. 35.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.🧺 Which of these is not needed for the periscope? (a) a magnet (b) a pencil (c) a ruler (d) sticky tape
37. 37.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) reflection (d) refraction
38. 38.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) two small mirrors (d) a balloon
39. 39.True or false: vinegar is needed for the periscope. (a) True (b) False
40. 40.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a brighter view (d) a rainbow

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