Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 253 · 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.🔭 How many mirrors does a simple periscope use?
2. 2.⚖️ 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 change it (c) we keep it the same
3. 3.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) in colour (d) upside down only
4. 4.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.🧺 Which of these is needed for the periscope? (a) vinegar (b) an empty juice carton (c) a magnet (d) yeast
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 change it (b) we keep it the same (c) we measure it
7. 7.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
8. 8.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) still clear water (d) black cloth
9. 9.True or false: a balloon is not needed for the periscope. (a) False (b) True
10. 10.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) dark soil (d) a mirror
11. 11.True or false: dark soil reflects light poorly. (a) True (b) False
12. 12.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a rough wooden board (c) a mirror (d) still clear water
13. 13.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a shiny steel plate (d) a dull brick
14. 14.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
15. 15.🧺 Which of these is needed for the periscope? (a) a magnet (b) a ruler (c) a balloon (d) a battery cell
16. 16.True or false: a ruler is not needed for the periscope. (a) False (b) True
17. 17.⚖️ 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) how clear the view is (c) the angle of the mirrors
18. 18.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) the ground (d) taller walls
19. 19.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a farmer (d) a baker
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) a magnet (d) an empty juice carton
21. 21.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
22. 22.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
25. 25.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) aluminium foil (d) a shiny steel plate
26. 26.🔭 Which of these reflects light poorly? (a) black cloth (b) aluminium foil (c) still clear water (d) a mirror
27. 27.🧺 Which of these is needed for the periscope? (a) a pencil (b) a balloon (c) yeast (d) vinegar
28. 28.🧺 Which of these is not needed for the periscope? (a) a ruler (b) sticky tape (c) a pencil (d) a balloon
29. 29.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) dark soil (d) a shiny steel plate
30. 30.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) yeast (d) two small mirrors
31. 31.⚖️ 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
32. 32.True or false: a magnet is needed for the periscope. (a) False (b) True
33. 33.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 45 degrees (d) 10 degrees
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) two small mirrors (c) a pencil (d) an empty juice carton
35. 35.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a magnet (c) two small mirrors (d) sticky tape
36. 36.🔭 How many times does light bounce off a mirror in a simple periscope?
37. 37.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
38. 38.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same light (c) the angle of the mirrors (d) the object we look at
40. 40.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) plastic safety mirrors (d) loose glass panes

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids