Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 799 · 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.True or false: a battery cell is needed for the periscope. (a) True (b) False
2. 2.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see germs (d) see over a wall
3. 3.True or false: black cloth reflects light well. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) black cloth (d) a shiny steel plate
5. 5.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
6. 6.🔭 Which of these reflects light well? (a) a rough wooden board (b) a mirror (c) a dull brick (d) dark soil
7. 7.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a wall (d) a friend’s toy
8. 8.True or false: a balloon is not needed for the periscope. (a) True (b) False
9. 9.True or false: a mirror reflects light poorly. (a) False (b) True
10. 10.⚖️ 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 object we look at (c) the angle of the mirrors
11. 11.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) a brighter view (d) two pictures
12. 12.🧺 Which of these is needed for the periscope? (a) a magnet (b) two small mirrors (c) a balloon (d) vinegar
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 carton (b) the angle of the mirrors (c) the object we look at (d) how clear the view is
14. 14.True or false: dark soil reflects light well. (a) True (b) False
15. 15.⚖️ 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) False (b) True
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
17. 17.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.🔭 How many mirrors does a simple periscope use?
19. 19.🛟 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
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
21. 21.⚖️ 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 same carton (c) the angle of the mirrors
22. 22.True or false: a mirror reflects light well. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a mirror (d) a rough wooden board
24. 24.True or false: yeast is needed for the periscope. (a) True (b) False
25. 25.⚖️ 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
26. 26.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a submarine crew (d) a baker
27. 27.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) a shiny steel plate (d) black cloth
28. 28.⚖️ 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) False (b) True
29. 29.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) aluminium foil (d) dark soil
30. 30.🔭 How many times does light bounce off a mirror in a simple periscope?
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a ruler (d) a balloon
32. 32.⚖️ 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
33. 33.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) a balloon (d) an empty juice carton
34. 34.⚖️ 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) True (b) False
35. 35.True or false: two small mirrors is needed for the periscope. (a) False (b) True
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a battery cell (c) sticky tape (d) an empty juice carton
37. 37.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) plastic safety mirrors (d) loose glass panes
38. 38.True or false: a pencil is not needed for the periscope. (a) True (b) False
39. 39.True or false: a pencil is needed for the periscope. (a) False (b) True
40. 40.True or false: yeast is not needed for the periscope. (a) True (b) False

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