Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 627 · 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: sticky tape is not needed for the periscope. (a) True (b) False
2. 2.⚖️ 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 measure it (b) we change it (c) we keep it the same
3. 3.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a rough wooden board (d) aluminium foil
4. 4.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
5. 5.True or false: a dull brick reflects light poorly. (a) False (b) True
6. 6.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
7. 7.🔮 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
8. 8.True or false: vinegar is not needed for the periscope. (a) True (b) False
9. 9.⚖️ 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
10. 10.True or false: a mirror reflects light well. (a) True (b) False
11. 11.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a submarine crew (d) a pilot in a plane
12. 12.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) a dull brick (d) a mirror
13. 13.True or false: a ruler is needed for the periscope. (a) False (b) True
14. 14.True or false: aluminium foil reflects light well. (a) False (b) True
15. 15.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) turmeric powder (d) sticky tape
16. 16.🔭 How many times does light bounce off a mirror in a simple periscope?
17. 17.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) dark soil (d) a shiny steel plate
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a balloon (d) two small mirrors
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) True (b) False
20. 20.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
21. 21.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
22. 22.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) broken glass bits (d) loose glass panes
23. 23.🔍 Which is the odd one out? (a) black cloth (b) aluminium foil (c) a dull brick (d) dark soil
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a magnet (c) a ruler (d) sticky tape
25. 25.⚖️ 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
26. 26.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) a balloon (d) sticky tape
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.🔮 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
29. 29.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) vinegar (d) a ruler
30. 30.True or false: yeast is needed for the periscope. (a) True (b) False
31. 31.True or false: yeast is not needed for the periscope. (a) False (b) True
32. 32.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
33. 33.⚖️ 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 same mirrors (c) the angle of the mirrors
34. 34.⚖️ 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 object we look at (c) the same mirrors (d) the same carton
35. 35.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
37. 37.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
38. 38.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) a shiny steel plate (d) a dull brick
39. 39.🔮 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
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) yeast (c) a ruler (d) an empty juice carton

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