Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 536 · 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.🔮 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
2. 2.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) still clear water (d) a rough wooden board
3. 3.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) hear far sounds (d) see over a wall
4. 4.True or false: a mirror reflects light well. (a) False (b) True
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) yeast (d) a pencil
6. 6.⚖️ 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
7. 7.True or false: a rough wooden board reflects light well. (a) False (b) True
8. 8.🔭 How many mirrors does a simple periscope use?
9. 9.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) vinegar (c) yeast (d) a balloon
10. 10.⚖️ 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
11. 11.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the object we look at (c) the same mirrors (d) how clear the view is
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we change it (b) we measure it (c) we keep it the same
15. 15.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
16. 16.True or false: a dull brick reflects light well. (a) True (b) False
17. 17.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) to make it heavy (d) so it looks shiny
18. 18.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a rough wooden board (d) still clear water
19. 19.⚖️ 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
20. 20.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
21. 21.True or false: still clear water reflects light poorly. (a) False (b) True
22. 22.🔮 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
23. 23.True or false: a pencil is not needed for the periscope. (a) False (b) True
24. 24.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a tree (d) a wall
25. 25.True or false: still clear water reflects light well. (a) False (b) True
26. 26.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
27. 27.True or false: a balloon is not needed for the periscope. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) dark soil (d) a mirror
29. 29.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) big wall mirrors (d) plastic safety mirrors
30. 30.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a farmer (d) a submarine crew
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) vinegar (c) two small mirrors (d) an empty juice carton
32. 32.True or false: black cloth reflects light poorly. (a) False (b) True
33. 33.True or false: a dull brick reflects light poorly. (a) False (b) True
34. 34.🔭 How many times does light bounce off a mirror in a simple periscope?
35. 35.🔭 Which of these reflects light well? (a) a shiny steel plate (b) dark soil (c) a rough wooden board (d) a dull brick
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
37. 37.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
38. 38.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a balloon (c) sticky tape (d) an empty juice carton
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a magnet (d) sticky tape
40. 40.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) only short walls (d) the ground

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