Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 92 · 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.🔭 Which of these reflects light poorly? (a) a mirror (b) dark soil (c) a shiny steel plate (d) aluminium foil
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) sticky tape (d) a pencil
3. 3.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a rainbow (d) a brighter view
4. 4.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) refraction (d) magnetism
5. 5.True or false: a balloon is needed for the periscope. (a) True (b) False
6. 6.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
8. 8.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 45 degrees (d) 90 degrees
9. 9.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) plastic safety mirrors (d) loose glass panes
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the object we look at (c) how clear the view is (d) the angle of the mirrors
11. 11.⚖️ 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
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.🔮 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
14. 14.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) a dull brick (d) a mirror
15. 15.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
16. 16.⚖️ 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) False (b) True
17. 17.True or false: turmeric powder is needed for the periscope. (a) True (b) False
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) False (b) True
19. 19.🧺 Which of these is needed for the periscope? (a) vinegar (b) sticky tape (c) a balloon (d) turmeric powder
20. 20.⚖️ 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
21. 21.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) a rough wooden board
22. 22.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) a mirror (d) black cloth
23. 23.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) aluminium foil (d) still clear water
24. 24.🧺 Which of these is needed for the periscope? (a) a balloon (b) turmeric powder (c) yeast (d) an empty juice carton
25. 25.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
26. 26.🔭 How many mirrors does a simple periscope use?
27. 27.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
28. 28.⚖️ 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
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
31. 31.True or false: a balloon is not needed for the periscope. (a) True (b) False
32. 32.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) yeast (c) a pencil (d) a ruler
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
35. 35.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
36. 36.🧺 Which of these is not needed for the periscope? (a) a balloon (b) a pencil (c) an empty juice carton (d) two small mirrors
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is
38. 38.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) a battery cell (d) two small mirrors
39. 39.🔍 Which is the odd one out? (a) still clear water (b) dark soil (c) a rough wooden board (d) a dull brick
40. 40.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well

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