Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 260 · 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.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) black cloth (d) a rough wooden board
2. 2.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) a mirror (d) aluminium foil
3. 3.🔭 Which of these reflects light poorly? (a) black cloth (b) aluminium foil (c) a shiny steel plate (d) still clear water
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a balloon (d) an empty juice carton
5. 5.⚖️ 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
6. 6.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
7. 7.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
8. 8.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
9. 9.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits
10. 10.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
11. 11.🔭 How many times does light bounce off a mirror in a simple periscope?
12. 12.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so it looks shiny (d) so light reaches the eye
13. 13.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
14. 14.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) True (b) False
17. 17.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.⚖️ 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
20. 20.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
21. 21.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) in colour (d) upside down only
23. 23.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
24. 24.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
25. 25.⚖️ 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 measure it (b) we change it (c) we keep it the same
26. 26.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) a rough wooden board (d) dark soil
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
28. 28.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) vinegar (c) a pencil (d) two small mirrors
29. 29.🔭 How many mirrors does a simple periscope use?
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a magnet (c) sticky tape (d) a pencil
31. 31.🔍 Which is the odd one out? (a) aluminium foil (b) dark soil (c) still clear water (d) a mirror
32. 32.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a balloon (c) two small mirrors (d) a ruler
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the object we look at (c) the same light (d) the same carton
34. 34.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) turmeric powder (d) an empty juice carton
36. 36.🔭 Which of these reflects light poorly? (a) a mirror (b) dark soil (c) a shiny steel plate (d) aluminium foil
37. 37.⚖️ 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 keep it the same (c) we change it
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) vinegar (d) two small mirrors
39. 39.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.True or false: an empty juice carton is needed for the periscope. (a) True (b) False

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