Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 868 · 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.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees
4. 4.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
5. 5.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) to make it heavy (d) so it looks shiny
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the same carton (c) how clear the view is (d) the same mirrors
7. 7.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
8. 8.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) taller walls (d) nothing at all
9. 9.⚖️ 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) False (b) True
10. 10.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) refraction (d) magnetism
11. 11.True or false: a dull brick reflects light well. (a) True (b) False
12. 12.⚖️ 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
13. 13.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a shiny steel plate (d) black cloth
14. 14.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
15. 15.🔭 How many times does light bounce off a mirror in a simple periscope?
16. 16.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
17. 17.True or false: vinegar is needed for the periscope. (a) True (b) False
18. 18.True or false: dark soil reflects light well. (a) False (b) True
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
20. 20.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) a shiny steel plate (d) black cloth
21. 21.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) an empty juice carton (c) a ruler (d) two small mirrors
22. 22.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) sticky tape (d) a magnet
23. 23.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a baker (d) a farmer
24. 24.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) aluminium foil (d) a rough wooden board
25. 25.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) aluminium foil (d) a rough wooden board
26. 26.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a shiny steel plate (d) a rough wooden board
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) sticky tape (d) an empty juice carton
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same carton (b) the angle of the mirrors (c) the same light (d) how clear the view is
29. 29.True or false: aluminium foil reflects light well. (a) False (b) True
30. 30.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) hear far sounds (d) see over a wall
31. 31.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a balloon (c) a ruler (d) sticky tape
32. 32.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a friend’s toy (d) a wall
33. 33.⚖️ 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 angle of the mirrors (c) the same carton
34. 34.True or false: a rough wooden board reflects light well. (a) False (b) True
35. 35.True or false: a shiny steel plate reflects light well. (a) False (b) True
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) a balloon
37. 37.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) a magnet (d) two small mirrors
38. 38.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) a ruler (d) yeast
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly

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