Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 209 · 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: vinegar is needed for the periscope. (a) False (b) True
2. 2.🛟 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
3. 3.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) dark soil (d) a shiny steel plate
6. 6.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
7. 7.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
8. 8.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
9. 9.🔭 How many mirrors does a simple periscope use?
10. 10.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) two pictures (d) a rainbow
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) an empty juice carton (d) vinegar
12. 12.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) still clear water (d) dark soil
13. 13.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a battery cell (c) a magnet (d) two small mirrors
14. 14.True or false: a balloon is not needed for the periscope. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a dull brick (d) a mirror
16. 16.⚖️ 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) True (b) False
17. 17.⚖️ 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
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a balloon (d) a pencil
19. 19.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
21. 21.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) the ground (d) only short walls
22. 22.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) aluminium foil (d) a dull brick
23. 23.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a wall (d) a tree
24. 24.⚖️ 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 change it (c) we measure it
25. 25.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
26. 26.📘 Light bouncing off a mirror is called ___. (a) refraction (b) magnetism (c) reflection (d) evaporation
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is
28. 28.🧺 Which of these is needed for the periscope? (a) yeast (b) vinegar (c) an empty juice carton (d) a battery cell
29. 29.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
30. 30.⚖️ 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 keep it the same (b) we measure it (c) we change it
31. 31.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) a rough wooden board
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) yeast
33. 33.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) dark soil (d) black cloth
34. 34.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) dark soil (d) still clear water
35. 35.True or false: turmeric powder is needed for the periscope. (a) True (b) False
36. 36.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
37. 37.🔭 Who uses a periscope to look above the water? (a) a baker (b) a pilot in a plane (c) a farmer (d) a submarine crew
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) True (b) False
39. 39.True or false: aluminium foil reflects light well. (a) True (b) False
40. 40.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) a battery cell (d) an empty juice carton

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