Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 173 · 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.🔭 How many mirrors does a simple periscope use?
2. 2.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) a mirror (d) black cloth
3. 3.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a mirror (d) a rough wooden board
4. 4.True or false: a pencil is needed for the periscope. (a) False (b) True
5. 5.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
7. 7.🧺 Which of these is not needed for the periscope? (a) yeast (b) an empty juice carton (c) two small mirrors (d) sticky tape
8. 8.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) much bigger (d) in colour
9. 9.⚖️ 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
10. 10.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
11. 11.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) nothing at all (d) the ground
12. 12.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a magnet (d) a ruler
14. 14.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
15. 15.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
16. 16.True or false: vinegar is not needed for the periscope. (a) False (b) True
17. 17.⚖️ 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 change it (c) we measure it
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
19. 19.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
20. 20.True or false: black cloth reflects light poorly. (a) False (b) True
21. 21.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
22. 22.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall
23. 23.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
25. 25.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) two small mirrors (d) a magnet
26. 26.🧺 Which of these is needed for the periscope? (a) yeast (b) an empty juice carton (c) a battery cell (d) a balloon
27. 27.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) a rough wooden board
28. 28.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) broken glass bits (d) loose glass panes
29. 29.🔭 How many times does light bounce off a mirror in a simple periscope?
30. 30.🧺 Which of these is needed for the periscope? (a) a magnet (b) two small mirrors (c) turmeric powder (d) a balloon
31. 31.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
32. 32.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) an empty juice carton (c) a ruler (d) two small mirrors
34. 34.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) vinegar (c) an empty juice carton (d) a pencil
36. 36.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
37. 37.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
38. 38.🧺 Which of these is needed for the periscope? (a) a pencil (b) a battery cell (c) a magnet (d) yeast
39. 39.⚖️ 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 keep it the same (b) we measure it (c) we change it
40. 40.True or false: a rough wooden board reflects light well. (a) True (b) False

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