Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 430 · 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.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
2. 2.⚖️ 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
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) False (b) True
4. 4.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.⚖️ 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 keep it the same (c) we change it
6. 6.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) the ground (d) nothing at all
7. 7.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
8. 8.🔭 Which of these reflects light poorly? (a) a dull brick (b) a mirror (c) aluminium foil (d) a shiny steel plate
9. 9.True or false: black cloth reflects light well. (a) False (b) True
10. 10.True or false: a dull brick reflects light poorly. (a) True (b) False
11. 11.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
12. 12.True or false: a ruler is not needed for the periscope. (a) False (b) True
13. 13.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
15. 15.⚖️ 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) how clear the view is (c) the same mirrors
16. 16.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a magnet (c) an empty juice carton (d) a ruler
17. 17.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) a rough wooden board (d) aluminium foil
18. 18.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
19. 19.🔭 How many times does light bounce off a mirror in a simple periscope?
20. 20.🔭 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
21. 21.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
22. 22.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) hear far sounds (d) see in the dark
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) vinegar (d) sticky tape
25. 25.⚖️ 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) False (b) True
26. 26.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) dark soil (d) a dull brick
27. 27.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
29. 29.⚖️ 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
30. 30.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.⚖️ 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 object we look at (c) how clear the view is (d) the same carton
32. 32.🔭 How many mirrors does a simple periscope use?
33. 33.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) vinegar (d) an empty juice carton
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a shiny steel plate (d) dark soil
37. 37.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) black cloth
38. 38.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
39. 39.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) a rough wooden board (d) still clear water
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True

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