Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 670 · 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) an empty juice carton (b) two small mirrors (c) a battery cell (d) a pencil
2. 2.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 10 degrees (d) 180 degrees
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
5. 5.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
7. 7.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a balloon (c) sticky tape (d) a pencil
9. 9.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) black cloth (d) aluminium foil
10. 10.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a pencil (c) vinegar (d) a battery cell
11. 11.⚖️ 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
12. 12.🔭 Which of these reflects light well? (a) a shiny steel plate (b) dark soil (c) a rough wooden board (d) black cloth
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) True (b) False
14. 14.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) a battery cell (d) two small mirrors
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) vinegar (d) an empty juice carton
16. 16.⚖️ 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
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is (d) the same carton
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.🔭 How many times does light bounce off a mirror in a simple periscope?
20. 20.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) upside down only (d) flipped left to right
21. 21.🔭 Which of these reflects light well? (a) a dull brick (b) still clear water (c) dark soil (d) a rough wooden board
22. 22.🧺 Which of these is needed for the periscope? (a) a battery cell (b) sticky tape (c) vinegar (d) a balloon
23. 23.🛟 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
24. 24.True or false: a rough wooden board reflects light poorly. (a) True (b) False
25. 25.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see germs (d) see over a wall
26. 26.True or false: sticky tape is not needed for the periscope. (a) False (b) True
27. 27.True or false: a pencil is not needed for the periscope. (a) True (b) False
28. 28.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) only short walls (d) taller walls
29. 29.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a rough wooden board (d) a mirror
30. 30.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) reflection (d) magnetism
31. 31.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.True or false: sticky tape is needed for the periscope. (a) True (b) False
33. 33.⚖️ 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) the same carton (d) how clear the view is
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the object we look at
35. 35.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a farmer (d) a pilot in a plane
36. 36.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) aluminium foil (d) a rough wooden board
37. 37.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) black cloth (d) a shiny steel plate
38. 38.True or false: aluminium foil reflects light poorly. (a) False (b) True
39. 39.🧺 Which of these is not needed for the periscope? (a) yeast (b) two small mirrors (c) a ruler (d) sticky tape
40. 40.True or false: two small mirrors is not needed for the periscope. (a) True (b) False

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