Skip to content
LessonPrint

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

Next set

One paper per student

12345678910111213141516171819202122232425

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 would happen with a third mirror added at an angle?
  2. 2. What claim does this record support?
  3. 3. Why could nothing be seen with the flashlight off?
  4. 4. What does this record not tell you?
2.What does a mirror do to light that hits it?
  • A.It reflects it off in a new direction
  • B.It soaks it up
  • C.It makes more light
3.Which surface reflects light most like a mirror?
  • A.Smooth shiny metal
  • B.Rough tree bark
  • C.A woolly sweater
4.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
5.A cyclist's reflector shines in a car's headlights. Why?
  • A.It is hot
  • B.It has its own battery
  • C.It reflects the headlight beam back toward the driver
6.A still pond shows a clear reflection, but a rippled one does not. Why?
  • A.Still water is a mirror made of glass
  • B.Smooth water reflects light evenly, and ripples send it off in many directions
  • C.Ripples make the water darker
7.Why does a periscope have its mirrors tilted?
  • A.So light from above is turned down the tube and then into the eye
  • B.So the mirrors do not fall out
  • C.So it looks interesting

LessonPrint · 4-PS4-2 · Set 3 · free to copy for classroom use

Answer key — Around the Corner With Two Mirrors

Set 3. Prints on its own sheet.

  1. 1.1. The light path would turn again before reaching the card. 2. Light travels a path, reflects off mirrors, and must enter the eye for something to be seen. 3. No light traveled to the card and back to the eye. 4. It does not tell you how bright the card was each time.
  2. 2.It reflects it off in a new direction
  3. 3.Smooth shiny metal
  4. 4.Sunlight must reflect off the moon and reach your eyes
  5. 5.It reflects the headlight beam back toward the driver
  6. 6.Smooth water reflects light evenly, and ripples send it off in many directions
  7. 7.So light from above is turned down the tube and then into the eye

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