Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 680 · 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 is not needed for the periscope? (a) a pencil (b) two small mirrors (c) yeast (d) a ruler
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a pencil (c) two small mirrors (d) sticky tape
3. 3.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
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 measure it (b) we keep it the same (c) we change it
5. 5.True or false: a pencil is needed for the periscope. (a) False (b) True
6. 6.⚖️ 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
7. 7.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
8. 8.⚖️ 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
9. 9.🔍 Which is the odd one out? (a) still clear water (b) dark soil (c) a mirror (d) a shiny steel plate
10. 10.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
12. 12.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
13. 13.🧺 Which of these is not needed for the periscope? (a) a balloon (b) sticky tape (c) a pencil (d) an empty juice carton
14. 14.True or false: a rough wooden board reflects light well. (a) False (b) True
15. 15.🔭 How many times does light bounce off a mirror in a simple periscope?
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a magnet (d) sticky tape
17. 17.True or false: vinegar is needed for the periscope. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) aluminium foil (b) dark soil (c) a dull brick (d) black cloth
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 measure it (b) we change it (c) we keep it the same
20. 20.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) so light reaches the eye (d) to make it heavy
21. 21.True or false: dark soil reflects light well. (a) True (b) False
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
23. 23.True or false: a ruler is needed for the periscope. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) black cloth
25. 25.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) yeast (d) a ruler
26. 26.⚖️ 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 measure it (c) we keep it the same
27. 27.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
28. 28.⚖️ 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 keep it the same (b) we change it (c) we measure it
29. 29.True or false: two small mirrors is needed for the periscope. (a) False (b) True
30. 30.🔭 Which of these reflects light poorly? (a) still clear water (b) black cloth (c) aluminium foil (d) a mirror
31. 31.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) a dull brick (d) a mirror
32. 32.🔭 Which of these reflects light well? (a) a mirror (b) a dull brick (c) dark soil (d) a rough wooden board
33. 33.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
34. 34.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a farmer (d) a pilot in a plane
35. 35.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
36. 36.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) aluminium foil (d) a mirror
37. 37.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) yeast (c) a pencil (d) two small mirrors
39. 39.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
40. 40.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) in colour (d) upside down only

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