Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 673 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a magnet (d) an empty juice carton
2. 2.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) a brighter view (d) two pictures
3. 3.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) black cloth (d) a mirror
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) evaporation (d) refraction
6. 6.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
7. 7.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) dark soil (d) a shiny steel plate
8. 8.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
11. 11.🔭 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
12. 12.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
13. 13.True or false: dark soil reflects light poorly. (a) False (b) True
14. 14.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) plastic safety mirrors (d) loose glass panes
15. 15.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) flipped left to right (d) upside down only
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
17. 17.True or false: black cloth reflects light well. (a) True (b) False
18. 18.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
19. 19.⚖️ 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 light (b) the same carton (c) how clear the view is (d) the angle of the mirrors
20. 20.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) an empty juice carton (d) turmeric powder
21. 21.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
22. 22.True or false: a mirror reflects light well. (a) False (b) True
23. 23.🧺 Which of these is needed for the periscope? (a) a battery cell (b) sticky tape (c) vinegar (d) yeast
24. 24.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) dark soil (d) black cloth
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) yeast (d) two small mirrors
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
27. 27.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a mirror (c) a shiny steel plate (d) still clear water
28. 28.⚖️ 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
29. 29.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) aluminium foil (d) a rough wooden board
30. 30.🔭 How many mirrors does a simple periscope use?
31. 31.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) hear far sounds (d) see over a wall
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) True (b) False
33. 33.🧺 Which of these is needed for the periscope? (a) a magnet (b) a battery cell (c) two small mirrors (d) yeast
34. 34.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) black cloth (d) dark soil
35. 35.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.⚖️ 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 same mirrors (c) the object we look at (d) the angle of the mirrors
37. 37.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
38. 38.⚖️ 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 keep it the same (c) we measure it
39. 39.True or false: vinegar is not needed for the periscope. (a) True (b) False
40. 40.True or false: a pencil is needed for the periscope. (a) False (b) True

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