Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 437 · 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: still clear water reflects light poorly. (a) True (b) False
2. 2.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
3. 3.⚖️ 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
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) the angle of the mirrors (c) how clear the view is
5. 5.True or false: a ruler is needed for the periscope. (a) True (b) False
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.⚖️ 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 angle of the mirrors (c) the same light (d) the object we look at
8. 8.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) black cloth (c) aluminium foil (d) still clear water
9. 9.True or false: a battery cell is not needed for the periscope. (a) False (b) True
10. 10.⚖️ 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
11. 11.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
12. 12.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
13. 13.True or false: a magnet is needed for the periscope. (a) True (b) False
14. 14.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a farmer (d) a pilot in a plane
15. 15.🧺 Which of these is needed for the periscope? (a) a battery cell (b) turmeric powder (c) a magnet (d) an empty juice carton
16. 16.True or false: sticky tape is needed for the periscope. (a) True (b) False
17. 17.True or false: dark soil reflects light well. (a) True (b) False
18. 18.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) hear far sounds (d) see over a wall
19. 19.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
20. 20.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) aluminium foil (d) a mirror
21. 21.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a battery cell (c) a ruler (d) sticky tape
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) vinegar (c) an empty juice carton (d) a ruler
23. 23.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) a dull brick (d) black cloth
24. 24.⚖️ 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
25. 25.⚖️ 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
26. 26.🔭 How many times does light bounce off a mirror in a simple periscope?
27. 27.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) a battery cell (d) two small mirrors
29. 29.🔭 Which of these reflects light well? (a) still clear water (b) black cloth (c) a dull brick (d) dark soil
30. 30.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) a magnet (d) two small mirrors
31. 31.🔭 How many mirrors does a simple periscope use?
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a shiny steel plate (d) a dull brick
34. 34.⚖️ 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
35. 35.🔭 Which of these reflects light poorly? (a) still clear water (b) a dull brick (c) a shiny steel plate (d) aluminium foil
36. 36.🔮 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
37. 37.True or false: a magnet is not needed for the periscope. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) dark soil
39. 39.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) big wall mirrors (d) plastic safety mirrors
40. 40.True or false: dark soil reflects light poorly. (a) False (b) True

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