Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 10 · 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 yeast for the periscope? (a) not needed (b) needed
2. 2.⚖️ 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 object we look at (c) how clear the view is (d) the same light
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) still clear water (d) black cloth
5. 5.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
6. 6.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) yeast (c) a pencil (d) an empty juice carton
8. 8.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) two small mirrors (d) a ruler
10. 10.🔭 How many mirrors does a simple periscope use?
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🛟 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
13. 13.True or false: turmeric powder is not 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 balloon (b) two small mirrors (c) an empty juice carton (d) a pencil
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) an empty juice carton (c) a pencil (d) a ruler
16. 16.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
17. 17.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
18. 18.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) still clear water (d) dark soil
19. 19.🔭 Which of these reflects light poorly? (a) a dull brick (b) still clear water (c) a shiny steel plate (d) aluminium foil
20. 20.⚖️ 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
21. 21.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
22. 22.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a dull brick (d) a mirror
23. 23.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
24. 24.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) a rough wooden board
25. 25.⚖️ 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
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
27. 27.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) in colour (d) upside down only
28. 28.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
29. 29.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) a ruler (d) turmeric powder
30. 30.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) a rainbow (d) two pictures
31. 31.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a farmer (d) a pilot in a plane
32. 32.⚖️ 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
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) two small mirrors (c) a ruler (d) an empty juice carton
34. 34.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
35. 35.⚖️ 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 carton (c) the angle of the mirrors
36. 36.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) black cloth (d) a shiny steel plate
37. 37.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
38. 38.True or false: a pencil is needed for the periscope. (a) False (b) True
39. 39.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it

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