Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 490 · 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.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) a brighter view (d) only darkness
2. 2.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.🧺 Which of these is not needed for the periscope? (a) a balloon (b) a pencil (c) an empty juice carton (d) sticky tape
5. 5.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
6. 6.⚖️ 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 change it (c) we keep it the same
7. 7.🔭 Which of these reflects light well? (a) a shiny steel plate (b) black cloth (c) dark soil (d) a rough wooden board
8. 8.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) a balloon (d) two small mirrors
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) yeast (d) a pencil
10. 10.⚖️ 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 keep it the same (b) we measure it (c) we change it
11. 11.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) still clear water (d) dark soil
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a pencil (c) two small mirrors (d) sticky tape
13. 13.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) much bigger (d) in colour
14. 14.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
15. 15.🔭 How many mirrors does a simple periscope use?
16. 16.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) a mirror (d) black cloth
17. 17.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a mirror (d) a dull brick
18. 18.🛟 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
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) sticky tape (c) an empty juice carton (d) a pencil
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same mirrors (c) the same carton (d) the angle of the mirrors
22. 22.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
23. 23.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) nothing at all (d) the ground
24. 24.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
25. 25.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) dark soil (d) black cloth
26. 26.True or false: a dull brick reflects light well. (a) False (b) True
27. 27.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) a battery cell (d) a pencil
28. 28.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
29. 29.True or false: a rough wooden board reflects light poorly. (a) False (b) True
30. 30.True or false: dark soil reflects light well. (a) True (b) False
31. 31.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a baker (d) a submarine crew
32. 32.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
33. 33.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
34. 34.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) hear far sounds (d) see germs
35. 35.⚖️ 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 carton (c) the angle of the mirrors
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
37. 37.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a magnet (c) a battery cell (d) turmeric powder
38. 38.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) a pencil (d) yeast
39. 39.True or false: vinegar is not needed for the periscope. (a) True (b) False
40. 40.🔭 Which of these reflects light poorly? (a) black cloth (b) a mirror (c) still clear water (d) a shiny steel plate

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