Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 557 · 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.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a submarine crew (d) a pilot in a plane
2. 2.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) a ruler (d) a magnet
3. 3.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) much bigger (d) upside down only
4. 4.True or false: a magnet is not needed for the periscope. (a) False (b) True
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) sticky tape (d) yeast
6. 6.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) aluminium foil (d) dark soil
7. 7.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
8. 8.True or false: still clear water reflects light poorly. (a) False (b) True
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the object we look at
10. 10.True or false: a rough wooden board reflects light poorly. (a) True (b) False
11. 11.True or false: a dull brick reflects light well. (a) True (b) False
12. 12.⚖️ 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
13. 13.⚖️ 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 measure it (c) we change it
14. 14.⚖️ 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
15. 15.True or false: a pencil is needed for the periscope. (a) False (b) True
16. 16.⚖️ 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) how clear the view is (c) the angle of the mirrors
17. 17.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) magnetism (d) reflection
20. 20.True or false: a battery cell is not needed for the periscope. (a) False (b) True
21. 21.🔭 How many times does light bounce off a mirror in a simple periscope?
22. 22.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) plastic safety mirrors (d) broken glass bits
23. 23.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
24. 24.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a balloon (c) a ruler (d) an empty juice carton
25. 25.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) black cloth (d) still clear water
26. 26.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
28. 28.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) a ruler (d) yeast
29. 29.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
30. 30.True or false: yeast is needed for the periscope. (a) False (b) True
31. 31.🔭 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
32. 32.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.⚖️ 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 change it (b) we measure it (c) we keep it the same
34. 34.⚖️ 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 mirrors (b) the same carton (c) the angle of the mirrors (d) how clear the view is
35. 35.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
37. 37.True or false: aluminium foil reflects light well. (a) True (b) False
38. 38.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) two small mirrors (c) a pencil (d) sticky tape
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) how clear the view is (c) the angle of the mirrors
40. 40.True or false: still clear water reflects light well. (a) True (b) False

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