Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 530 · 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.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see over a wall (d) see germs
2. 2.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) a battery cell (d) two small mirrors
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) an empty juice carton (d) a magnet
5. 5.🧺 Which of these is not needed for the periscope? (a) a magnet (b) an empty juice carton (c) a ruler (d) a pencil
6. 6.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) black cloth (d) a shiny steel plate
7. 7.⚖️ 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 measure it (b) we keep it the same (c) we change it
8. 8.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
9. 9.True or false: yeast is needed for the periscope. (a) False (b) True
10. 10.True or false: vinegar is needed for the periscope. (a) True (b) False
11. 11.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a pilot in a plane (d) a submarine crew
12. 12.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) loose glass panes (d) big wall mirrors
13. 13.🔮 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
14. 14.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) sticky tape (d) turmeric powder
15. 15.True or false: two small mirrors is needed for the periscope. (a) False (b) True
16. 16.True or false: a shiny steel plate reflects light well. (a) True (b) False
17. 17.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) a pencil (d) a balloon
18. 18.🛟 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
19. 19.📘 Light bouncing off a mirror is called ___. (a) refraction (b) magnetism (c) reflection (d) evaporation
20. 20.⚖️ 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) the angle of the mirrors (c) the same light (d) the same mirrors
21. 21.⚖️ 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 keep it the same (c) we measure it
22. 22.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
23. 23.True or false: a pencil is not needed for the periscope. (a) True (b) False
24. 24.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a rainbow (d) a brighter view
25. 25.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) a pencil (d) a balloon
26. 26.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) two small mirrors (d) vinegar
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) a pencil (d) a battery cell
28. 28.🔭 How many times does light bounce off a mirror in a simple periscope?
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) sticky tape (c) an empty juice carton (d) two small mirrors
30. 30.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
31. 31.True or false: a battery cell is not needed for the periscope. (a) False (b) True
32. 32.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) black cloth (d) still clear water
35. 35.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) a mirror (d) still clear water
36. 36.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
37. 37.⚖️ 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 change it (c) we measure it
38. 38.⚖️ 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 angle of the mirrors (c) the same carton
39. 39.True or false: a rough wooden board reflects light poorly. (a) False (b) True
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True

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