Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 883 · 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 of these reflects light well? (a) dark soil (b) still clear water (c) a dull brick (d) black cloth
2. 2.⚖️ 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
3. 3.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) yeast (d) two small mirrors
4. 4.🔭 Which of these reflects light well? (a) a mirror (b) dark soil (c) black cloth (d) a dull brick
5. 5.True or false: a rough wooden board reflects light poorly. (a) False (b) True
6. 6.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
7. 7.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
8. 8.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) a rainbow (d) two pictures
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) how clear the view is (c) the same carton (d) the same mirrors
10. 10.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
11. 11.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) hear far sounds (d) see in the dark
12. 12.⚖️ 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
13. 13.🔭 How many mirrors does a simple periscope use?
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) how clear the view is (c) the object we look at (d) the angle of the mirrors
15. 15.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
16. 16.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
17. 17.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) in colour (d) flipped left to right
18. 18.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) still clear water (d) aluminium foil
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) two small mirrors (d) turmeric powder
22. 22.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 45 degrees (d) 10 degrees
23. 23.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) nothing at all (d) the ground
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is
25. 25.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.🔭 Which of these reflects light well? (a) aluminium foil (b) a dull brick (c) dark soil (d) black cloth
27. 27.True or false: a shiny steel plate reflects light well. (a) False (b) True
28. 28.⚖️ 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
29. 29.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) to make it heavy (d) so it can float
30. 30.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) turmeric powder (c) a ruler (d) an empty juice carton
31. 31.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
32. 32.True or false: dark soil reflects light poorly. (a) True (b) False
33. 33.True or false: a dull brick reflects light well. (a) True (b) False
34. 34.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) dark soil (d) still clear water
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.🔭 How many times does light bounce off a mirror in a simple periscope?
37. 37.True or false: two small mirrors is needed for the periscope. (a) False (b) True
38. 38.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
39. 39.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) a rough wooden board (d) dark soil
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True

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