Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 853 · 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.🔮 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
2. 2.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a rough wooden board (d) aluminium foil
3. 3.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
4. 4.True or false: still clear water reflects light poorly. (a) False (b) True
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a balloon (d) a ruler
6. 6.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) dark soil (d) a shiny steel plate
7. 7.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) a battery cell
9. 9.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
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 light (c) the same carton (d) the object we look at
11. 11.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
12. 12.🧺 Which of these is needed for the periscope? (a) vinegar (b) sticky tape (c) a magnet (d) a balloon
13. 13.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
14. 14.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
15. 15.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
16. 16.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) the ground (d) nothing at all
17. 17.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.⚖️ 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
19. 19.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) black cloth (d) a mirror
20. 20.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) dark soil
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.True or false: black cloth reflects light well. (a) False (b) True
23. 23.⚖️ 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 measure it (b) we change it (c) we keep it the same
24. 24.⚖️ 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
25. 25.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) a ruler (d) a battery cell
26. 26.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
27. 27.⚖️ 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 light (b) the object we look at (c) the angle of the mirrors (d) how clear the view is
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
29. 29.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
30. 30.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) vinegar (d) sticky tape
31. 31.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) a rainbow (d) two pictures
33. 33.🔭 Which of these reflects light well? (a) still clear water (b) dark soil (c) black cloth (d) a rough wooden board
34. 34.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a baker (d) a pilot in a plane
35. 35.🔭 How many times does light bounce off a mirror in a simple periscope?
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) an empty juice carton (c) a pencil (d) two small mirrors
37. 37.⚖️ 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
38. 38.True or false: a rough wooden board reflects light poorly. (a) False (b) True
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we change it (c) we measure it
40. 40.True or false: a balloon is not needed for the periscope. (a) True (b) False

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