Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 623 · 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: dark soil reflects light well. (a) False (b) True
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a pencil (d) yeast
3. 3.🧺 Which of these is needed for the periscope? (a) a magnet (b) a battery cell (c) two small mirrors (d) a balloon
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.🛟 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
6. 6.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) a mirror
7. 7.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
8. 8.True or false: dark soil reflects light poorly. (a) False (b) True
9. 9.⚖️ 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 keep it the same (c) we change it
10. 10.🔭 How many mirrors does a simple periscope use?
11. 11.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) broken glass bits (d) big wall mirrors
12. 12.📘 Light bouncing off a mirror is called ___. (a) refraction (b) magnetism (c) evaporation (d) reflection
13. 13.🔭 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
14. 14.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) an empty juice carton (d) a pencil
16. 16.⚖️ 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
17. 17.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a battery cell (c) vinegar (d) yeast
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the object we look at (c) the angle of the mirrors (d) the same mirrors
19. 19.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
20. 20.True or false: two small mirrors is needed for the periscope. (a) False (b) True
21. 21.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a shiny steel plate (d) a rough wooden board
22. 22.🧺 Which of these is needed for the periscope? (a) a battery cell (b) yeast (c) a balloon (d) a ruler
23. 23.True or false: a pencil is not needed for the periscope. (a) False (b) True
24. 24.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a brighter view (d) a rainbow
25. 25.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a tree (d) a friend’s toy
26. 26.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
27. 27.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
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) False (b) True
29. 29.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) a battery cell (d) an empty juice carton
30. 30.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) black cloth (d) aluminium foil
32. 32.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a shiny steel plate (d) a dull brick
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
34. 34.True or false: a mirror reflects light well. (a) True (b) False
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we keep it the same (c) we change it
36. 36.True or false: yeast is not needed for the periscope. (a) False (b) True
37. 37.True or false: turmeric powder is needed for the periscope. (a) False (b) True
38. 38.🔭 How many times does light bounce off a mirror in a simple periscope?
39. 39.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
40. 40.⚖️ 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 same light

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