Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 137 · 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.True or false: a balloon is needed for the periscope. (a) True (b) False
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.True or false: a shiny steel plate reflects light well. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) still clear water (d) a rough wooden board
5. 5.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
6. 6.⚖️ 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
7. 7.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
8. 8.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) a mirror (d) black cloth
11. 11.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
12. 12.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
13. 13.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
14. 14.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) False (b) True
16. 16.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) nothing at all (d) the ground
17. 17.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) magnetism (d) refraction
18. 18.🔭 How many times does light bounce off a mirror in a simple periscope?
19. 19.🔭 What does a periscope let you do? (a) hear far sounds (b) see over a wall (c) see germs (d) see in the dark
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) two small mirrors (c) a ruler (d) sticky tape
21. 21.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) plastic safety mirrors (d) big wall mirrors
22. 22.True or false: yeast is not needed for the periscope. (a) True (b) False
23. 23.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
24. 24.⚖️ 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 light
25. 25.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 10 degrees (d) 90 degrees
26. 26.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) upside down only (d) flipped left to right
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a ruler (d) a balloon
28. 28.🧺 Which of these is not needed for the periscope? (a) yeast (b) a pencil (c) sticky tape (d) two small mirrors
29. 29.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) a dull brick
30. 30.True or false: a pencil is needed for the periscope. (a) True (b) False
31. 31.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a pilot in a plane (d) a baker
32. 32.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
33. 33.True or false: sticky tape is not needed for the periscope. (a) False (b) True
34. 34.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
35. 35.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
36. 36.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
37. 37.True or false: turmeric powder is needed for the periscope. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a dull brick (d) a shiny steel plate
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 change it (b) we keep it the same (c) we measure it
40. 40.⚖️ 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

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