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Around the Corner With Two Mirrors is a free printable Grade 4 science worksheet on using a mirror test to model how reflected light reaches the eye, aligned to NGSS performance expectation 4-PS4-2. It prints 7 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 17 of 25 · the same problems every time you open this link.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Around the Corner With Two Mirrors

4-PS4-2

NameDate

Read the record, then answer the questions.

1.Read the record, then answer the questions.

Around the Corner With Two Mirrors

What the class saw when a flashlight beam was aimed into a tube with two angled mirrors. THE PERISCOPE TUBE Flashlight on, both mirrors in place: the card at the far end was lit Flashlight on, top mirror removed: the card was not lit Flashlight off, both mirrors in place: nothing could be seen A hand held in the beam: the card went dark The card never moved.

  1. 1. Why could nothing be seen with the flashlight off?
  2. 2. What happened when the top mirror was removed?
  3. 3. What claim does this record support?
  4. 4. What does this record not tell you?
2.A hand held in a flashlight beam makes a dark patch behind it. What does that show?
  • A.The hand soaks up all the air
  • B.Light travels in straight lines and the hand blocks it
  • C.The flashlight turned off
3.Which surface reflects light most like a mirror?
  • A.A woolly sweater
  • B.Rough tree bark
  • C.Smooth shiny metal
4.A cyclist's reflector shines in a car's headlights. Why?
  • A.It reflects the headlight beam back toward the driver
  • B.It is hot
  • C.It has its own battery
5.In a dark room with no light at all, you cannot see a white cup. Why?
  • A.The cup is too far away
  • B.White cups are invisible
  • C.No light is reflecting off it into your eyes
6.A still pond shows a clear reflection, but a rippled one does not. Why?
  • A.Ripples make the water darker
  • B.Still water is a mirror made of glass
  • C.Smooth water reflects light evenly, and ripples send it off in many directions
7.What does a mirror do to light that hits it?
  • A.It soaks it up
  • B.It reflects it off in a new direction
  • C.It makes more light

LessonPrint · 4-PS4-2 · Set 17 · free to copy for classroom use

Answer key — Around the Corner With Two Mirrors

Set 17. Prints on its own sheet.

  1. 1.1. No light traveled to the card and back to the eye. 2. The card was not lit. 3. Light travels a path, reflects off mirrors, and must enter the eye for something to be seen. 4. It does not tell you how bright the card was each time.
  2. 2.Light travels in straight lines and the hand blocks it
  3. 3.Smooth shiny metal
  4. 4.It reflects the headlight beam back toward the driver
  5. 5.No light is reflecting off it into your eyes
  6. 6.Smooth water reflects light evenly, and ripples send it off in many directions
  7. 7.It reflects it off in a new direction

Last reviewed 2026-09-05. Aligned to 4-PS4-2 of the Next Generation Science Standards.