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

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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 the top mirror was removed?
  2. 2. What did the card need before it could be seen?
  3. 3. Why could nothing be seen with the flashlight off?
  4. 4. What claim does this record support?
2.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
3.Which surface reflects light most like a mirror?
  • A.A woolly sweater
  • B.Rough tree bark
  • C.Smooth shiny metal
4.Why does a periscope have its mirrors tilted?
  • A.So it looks interesting
  • B.So the mirrors do not fall out
  • C.So light from above is turned down the tube and then into the eye
5.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
6.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
7.What must happen for you to see the moon at night?
  • A.Your eyes must shine on it
  • B.The moon must make its own light
  • C.Sunlight must reflect off the moon and reach your eyes

LessonPrint · 4-PS4-2 · Set 16 · free to copy for classroom use

Answer key — Around the Corner With Two Mirrors

Set 16. Prints on its own sheet.

  1. 1.1. The card was not lit. 2. Light reaching it along the path through both mirrors. 3. No light traveled to the card and back to the eye. 4. Light travels a path, reflects off mirrors, and must enter the eye for something to be seen.
  2. 2.It reflects it off in a new direction
  3. 3.Smooth shiny metal
  4. 4.So light from above is turned down the tube and then into the eye
  5. 5.Light travels in straight lines and the hand blocks it
  6. 6.It reflects the headlight beam back toward the driver
  7. 7.Sunlight must reflect off the moon and reach your eyes

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