Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 207 · 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 mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) loose glass panes (d) big wall mirrors
2. 2.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) reflection (d) refraction
3. 3.⚖️ 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
4. 4.⚖️ 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
5. 5.True or false: vinegar is needed for the periscope. (a) False (b) True
6. 6.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) vinegar (c) a magnet (d) yeast
7. 7.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) a dull brick (d) still clear water
8. 8.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
9. 9.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) vinegar (d) two small mirrors
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) sticky tape (b) a pencil (c) a battery cell (d) an empty juice carton
12. 12.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
13. 13.True or false: a ruler is not needed for the periscope. (a) True (b) False
14. 14.⚖️ 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 object we look at (c) the same light (d) the angle of the mirrors
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) yeast (c) sticky tape (d) a ruler
16. 16.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) upside down only (d) in colour
17. 17.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) aluminium foil (d) a rough wooden board
18. 18.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
19. 19.⚖️ 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
20. 20.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) only darkness (d) two pictures
21. 21.⚖️ 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 light (c) how clear the view is (d) the same mirrors
22. 22.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a wall (d) a friend’s toy
23. 23.🔭 How many times does light bounce off a mirror in a simple periscope?
24. 24.🔭 How many mirrors does a simple periscope use?
25. 25.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
26. 26.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a farmer (d) a pilot in a plane
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
28. 28.True or false: a dull brick reflects light well. (a) False (b) True
29. 29.⚖️ 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 keep it the same (b) we change it (c) we measure it
30. 30.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
31. 31.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) a pencil (d) a magnet
32. 32.🔭 Which of these reflects light well? (a) black cloth (b) a mirror (c) a dull brick (d) dark soil
33. 33.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a dull brick (c) black cloth (d) dark soil
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a balloon (d) a pencil
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) an empty juice carton (d) turmeric powder
36. 36.True or false: black cloth reflects light poorly. (a) False (b) True
37. 37.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) a pencil (d) turmeric powder
38. 38.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
39. 39.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) a pencil (c) sticky tape (d) an empty juice carton
40. 40.⚖️ 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) False (b) True

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