Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 577 · 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: black cloth reflects light well. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) a dull brick (d) black cloth
3. 3.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
4. 4.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
5. 5.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
6. 6.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see over a wall (d) see germs
7. 7.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) two small mirrors (d) a battery cell
8. 8.True or false: a dull brick reflects light well. (a) True (b) False
9. 9.True or false: yeast is not needed for the periscope. (a) True (b) False
10. 10.True or false: dark soil reflects light well. (a) True (b) False
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a magnet (c) sticky tape (d) two small mirrors
12. 12.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) still clear water (d) a rough wooden board
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) in colour (d) much bigger
15. 15.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
16. 16.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) the ground (d) only short walls
17. 17.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.⚖️ 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 keep it the same (b) we measure it (c) we change it
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.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
21. 21.⚖️ 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
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
23. 23.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
24. 24.⚖️ 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
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a pencil (d) a balloon
26. 26.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
27. 27.True or false: two small mirrors is needed for the periscope. (a) True (b) False
28. 28.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
29. 29.⚖️ 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 mirrors (b) how clear the view is (c) the same carton (d) the angle of the mirrors
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
31. 31.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
32. 32.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
33. 33.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) black cloth (d) aluminium foil
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) yeast (c) sticky tape (d) an empty juice carton
35. 35.🧺 Which of these is needed for the periscope? (a) vinegar (b) a pencil (c) a battery cell (d) a balloon
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) True (b) False
37. 37.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) two pictures (d) only darkness
38. 38.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
39. 39.🔭 How many mirrors does a simple periscope use?
40. 40.🔭 How many times does light bounce off a mirror in a simple periscope?

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