Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 696 · 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.⚖️ 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 same light (c) how clear the view is (d) the object we look at
2. 2.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) a shiny steel plate (d) a mirror
3. 3.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
4. 4.True or false: a balloon is needed for the periscope. (a) False (b) True
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) sticky tape (d) turmeric powder
7. 7.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 45 degrees (d) 10 degrees
8. 8.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) False (b) True
10. 10.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) see over a wall (d) hear far sounds
11. 11.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
12. 12.True or false: black cloth reflects light poorly. (a) False (b) True
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
14. 14.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) still clear water (d) a dull brick
15. 15.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a rough wooden board (d) a mirror
16. 16.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
17. 17.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a rough wooden board (d) a mirror
18. 18.🛟 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
19. 19.🧺 Which of these is needed for the periscope? (a) yeast (b) turmeric powder (c) a magnet (d) sticky tape
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a pilot in a plane (d) a submarine crew
22. 22.⚖️ 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
23. 23.True or false: a mirror reflects light poorly. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) dark soil (d) a shiny steel plate
25. 25.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
26. 26.🧺 Which of these is needed for the periscope? (a) a battery cell (b) two small mirrors (c) yeast (d) vinegar
27. 27.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a mirror (d) a rough wooden board
28. 28.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
29. 29.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) evaporation (d) reflection
30. 30.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.True or false: two small mirrors is needed for the periscope. (a) False (b) True
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is (d) the same light
33. 33.🔭 How many times does light bounce off a mirror in a simple periscope?
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a ruler (d) a magnet
35. 35.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) a battery cell (d) a pencil
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a pencil (d) yeast
37. 37.⚖️ 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 keep it the same (c) we measure it
38. 38.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) black cloth (d) a shiny steel plate
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) a ruler (d) turmeric powder
40. 40.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well

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