Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 721 · 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: two small mirrors is not needed for the periscope. (a) True (b) False
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the same carton (c) how clear the view is
3. 3.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a baker (d) a pilot in a plane
4. 4.🔭 What does a periscope let you do? (a) hear far sounds (b) see over a wall (c) see in the dark (d) see germs
5. 5.True or false: black cloth reflects light poorly. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) a rough wooden board (d) dark soil
7. 7.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) the ground (d) taller walls
8. 8.🔭 How many mirrors does a simple periscope use?
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) how clear the view is (c) the same carton (d) the same light
10. 10.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) plastic safety mirrors (d) broken glass bits
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) a magnet
13. 13.True or false: a battery cell is needed for the periscope. (a) False (b) True
14. 14.True or false: a shiny steel plate reflects light well. (a) False (b) True
15. 15.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
16. 16.🔭 How many times does light bounce off a mirror in a simple periscope?
17. 17.True or false: a dull brick reflects light poorly. (a) True (b) False
18. 18.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
19. 19.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a ruler (d) a balloon
21. 21.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
22. 22.True or false: a balloon is needed for the periscope. (a) True (b) False
23. 23.True or false: vinegar is needed for the periscope. (a) False (b) True
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.True or false: a balloon is not needed for the periscope. (a) False (b) True
26. 26.⚖️ 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
27. 27.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
28. 28.🔭 Which of these reflects light poorly? (a) aluminium foil (b) black cloth (c) still clear water (d) a mirror
29. 29.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) a mirror
31. 31.⚖️ 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
32. 32.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
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 light
34. 34.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
35. 35.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a shiny steel plate (d) a rough wooden board
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
37. 37.🔮 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
38. 38.True or false: dark soil reflects light well. (a) True (b) False
39. 39.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
40. 40.True or false: a magnet is not needed for the periscope. (a) False (b) True

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