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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.

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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. What happened when a hand was held in the beam?
  2. 2. What did the card need before it could be seen?
  3. 3. What happened when the top mirror was removed?
  4. 4. What claim does this record support?
2.Which surface reflects light most like a mirror?
  • A.Rough tree bark
  • B.A woolly sweater
  • C.Smooth shiny metal
3.A book makes no light of its own. Why can you see it?
  • A.Your eyes send light to it
  • B.Light from a lamp reflects off it into your eyes
  • C.Books glow faintly
4.A cyclist's reflector shines in a car's headlights. Why?
  • A.It has its own battery
  • B.It is hot
  • C.It reflects the headlight beam back toward the driver
5.A still pond shows a clear reflection, but a rippled one does not. Why?
  • A.Still water is a mirror made of glass
  • B.Ripples make the water darker
  • C.Smooth water reflects light evenly, and ripples send it off in many directions
6.What must happen for you to see the moon at night?
  • A.Your eyes must shine on it
  • B.Sunlight must reflect off the moon and reach your eyes
  • C.The moon must make its own light
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 24 · free to copy for classroom use

Answer key — Around the Corner With Two Mirrors

Set 24. Prints on its own sheet.

  1. 1.1. The card went dark. 2. Light reaching it along the path through both mirrors. 3. The card was not lit. 4. Light travels a path, reflects off mirrors, and must enter the eye for something to be seen.
  2. 2.Smooth shiny metal
  3. 3.Light from a lamp reflects off it into your eyes
  4. 4.It reflects the headlight beam back toward the driver
  5. 5.Smooth water reflects light evenly, and ripples send it off in many directions
  6. 6.Sunlight must reflect off the moon and reach your eyes
  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.