Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 895 · 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: aluminium foil reflects light poorly. (a) True (b) False
2. 2.🔭 Which of these reflects light well? (a) a mirror (b) a rough wooden board (c) dark soil (d) a dull brick
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
5. 5.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) black cloth (d) a rough wooden board
6. 6.⚖️ 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 change it (b) we measure it (c) we keep it the same
7. 7.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
8. 8.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) vinegar (d) sticky tape
9. 9.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) a mirror (d) a dull brick
10. 10.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
11. 11.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) black cloth
12. 12.⚖️ 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
13. 13.🔭 How many times does light bounce off a mirror in a simple periscope?
14. 14.🔍 Which is the odd one out? (a) still clear water (b) dark soil (c) a shiny steel plate (d) aluminium foil
15. 15.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
16. 16.True or false: aluminium foil reflects light well. (a) False (b) True
17. 17.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see in the dark (d) see over a wall
18. 18.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.True or false: a magnet is needed for the periscope. (a) False (b) True
20. 20.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) a friend’s toy (d) the Sun
21. 21.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
22. 22.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) much bigger (d) flipped left to right
23. 23.🔭 Which of these reflects light well? (a) a shiny steel plate (b) black cloth (c) a dull brick (d) dark soil
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the object we look at (c) how clear the view is (d) the same mirrors
25. 25.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) yeast (d) sticky tape
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) sticky tape (d) vinegar
27. 27.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 10 degrees (c) 90 degrees (d) 180 degrees
28. 28.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a pencil (d) a balloon
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) a pencil (d) sticky tape
30. 30.True or false: a mirror reflects light poorly. (a) True (b) False
31. 31.True or false: a rough wooden board reflects light poorly. (a) True (b) False
32. 32.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a farmer (d) a submarine crew
33. 33.⚖️ 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
34. 34.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) dark soil (d) aluminium foil
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same light (c) how clear the view is (d) the object we look at
36. 36.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
37. 37.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
38. 38.True or false: two small mirrors is needed for the periscope. (a) False (b) True
39. 39.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
40. 40.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) so it can float (d) to make it heavy

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