Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 65 · 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) a rainbow (b) only darkness (c) a brighter view (d) two pictures
2. 2.🔮 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
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a pencil (d) a magnet
4. 4.🧺 Which of these is not needed for the periscope? (a) a balloon (b) an empty juice carton (c) a ruler (d) a pencil
5. 5.🧺 Which of these is not needed for the periscope? (a) vinegar (b) a ruler (c) an empty juice carton (d) a pencil
6. 6.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a baker (d) a farmer
7. 7.⚖️ 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 measure it (c) we change it
8. 8.🛟 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
9. 9.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
10. 10.True or false: aluminium foil reflects light poorly. (a) False (b) True
11. 11.⚖️ 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
12. 12.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) magnetism (d) refraction
13. 13.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) a dull brick (d) dark soil
14. 14.True or false: aluminium foil reflects light well. (a) False (b) True
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) turmeric powder (d) a ruler
16. 16.🔭 How many times does light bounce off a mirror in a simple periscope?
17. 17.🔭 How many mirrors does a simple periscope use?
18. 18.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) upside down only (d) much bigger
19. 19.🧺 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) vinegar
20. 20.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
21. 21.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) sticky tape (d) a magnet
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) True (b) False
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) how clear the view is (c) the angle of the mirrors
25. 25.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
26. 26.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
27. 27.True or false: black cloth reflects light poorly. (a) False (b) True
28. 28.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 45 degrees (d) 180 degrees
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) a dull brick (d) a shiny steel plate
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a balloon (d) two small mirrors
32. 32.True or false: a rough wooden board reflects light well. (a) False (b) True
33. 33.True or false: still clear water reflects light well. (a) True (b) False
34. 34.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) two small mirrors (d) turmeric powder
35. 35.True or false: yeast is needed for the periscope. (a) True (b) False
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a battery cell (d) an empty juice carton
37. 37.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) big wall mirrors (d) loose glass panes
38. 38.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
39. 39.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
40. 40.⚖️ 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

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids