Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 454 · 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.⚖️ 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 same carton (c) the same light (d) how clear the view is
2. 2.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) sticky tape (c) a pencil (d) an empty juice carton
4. 4.⚖️ 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) True (b) False
5. 5.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) a magnet (d) two small mirrors
6. 6.True or false: a rough wooden board reflects light well. (a) False (b) True
7. 7.⚖️ 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) True (b) False
8. 8.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a rough wooden board (d) a mirror
9. 9.⚖️ 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 change it (b) we measure it (c) we keep it the same
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 change it (c) we measure it
11. 11.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a pencil (d) vinegar
12. 12.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) a rough wooden board (d) aluminium foil
13. 13.🔮 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
14. 14.🔭 How many mirrors does a simple periscope use?
15. 15.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) a shiny steel plate (d) dark soil
16. 16.⚖️ 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
17. 17.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) so it looks shiny (d) to make it heavy
18. 18.True or false: a balloon is needed for the periscope. (a) True (b) False
19. 19.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 45 degrees (d) 10 degrees
20. 20.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) evaporation (d) refraction
21. 21.🔭 How many times does light bounce off a mirror in a simple periscope?
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a pencil (d) a magnet
23. 23.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
24. 24.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) a magnet (d) sticky tape
25. 25.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
26. 26.True or false: a ruler is not needed for the periscope. (a) True (b) False
27. 27.True or false: sticky tape is not needed for the periscope. (a) True (b) False
28. 28.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
29. 29.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
30. 30.🔮 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
31. 31.True or false: a rough wooden board reflects light poorly. (a) False (b) True
32. 32.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
33. 33.🔍 Which is the odd one out? (a) still clear water (b) a dull brick (c) dark soil (d) black cloth
34. 34.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
35. 35.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
36. 36.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a submarine crew (d) a baker
37. 37.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
38. 38.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a shiny steel plate (d) black cloth
39. 39.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) an empty juice carton (d) a battery cell
40. 40.True or false: yeast is needed for the periscope. (a) True (b) False

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