Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 498 · 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.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 10 degrees (d) 180 degrees
2. 2.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) a rainbow (d) only darkness
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) vinegar (c) an empty juice carton (d) two small mirrors
4. 4.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) aluminium foil (d) a dull brick
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) sticky tape (d) a battery cell
6. 6.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
7. 7.True or false: a ruler is not needed for the periscope. (a) True (b) False
8. 8.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
9. 9.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a submarine crew (d) a farmer
10. 10.🔭 How many mirrors does a simple periscope use?
11. 11.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) taller walls (d) nothing at all
12. 12.True or false: still clear water reflects light well. (a) False (b) True
13. 13.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) a pencil (d) yeast
14. 14.⚖️ 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
15. 15.True or false: yeast is needed for the periscope. (a) True (b) False
16. 16.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) so it looks shiny (d) to make it heavy
17. 17.True or false: sticky tape is needed for the periscope. (a) False (b) True
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) yeast
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
20. 20.True or false: a dull brick reflects light poorly. (a) False (b) True
21. 21.True or false: aluminium foil reflects light well. (a) False (b) True
22. 22.⚖️ 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
23. 23.True or false: a battery cell is not needed for the periscope. (a) True (b) False
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a magnet (d) a pencil
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) a balloon (d) two small mirrors
26. 26.⚖️ 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
27. 27.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a rough wooden board (d) a mirror
28. 28.⚖️ 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
29. 29.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
30. 30.⚖️ 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 mirrors
31. 31.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) black cloth (d) a shiny steel plate
32. 32.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) aluminium foil (d) a shiny steel plate
33. 33.🔍 Which is the odd one out? (a) still clear water (b) a dull brick (c) black cloth (d) a rough wooden board
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) two small mirrors (c) an empty juice carton (d) sticky tape
35. 35.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
36. 36.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
37. 37.🔭 How many times does light bounce off a mirror in a simple periscope?
38. 38.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) flipped left to right (d) in colour
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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