Electromagnetic Waves and Optics Unit Test

Your image behind a plane mirror is at a distance equal to

• a. half your height.

• b. half your distance from the mirror.

• c. your distance in front of the mirror.

• d. slightly more than your distance in front of the mirror.

Tags

NGSS.MS-PS4-2

Refraction occurs when a light wave crosses a boundary and changes

• speed and direction.

• intensity.

• frequency.

• amplitude.

Tags

NGSS.MS-PS4-2

The image formed by a convex mirror is

• real and upright

• real and inverted

• virtual and upright

• none of these

Which has the SHORTEST wavelength and therefore the highest frequency/most energy? Hint: These waves are also used in cancer treatments.

• Gamma Rays

• Radio Waves

• Ultraviolet Rays

• X-rays

Tags

NGSS.HS-PS4-1

Which has the LONGEST wavelength and therefore the lowest frequency/energy? These waves are used in TV broadcasting, Wifi, and texting.

• Gamma rays

• Visible light

• Radio waves

• Infrared rays

Reorder the following from shortest wavelength to the longest wavelength.

• x-rays

• visible light

• ultraviolet waves

• infrared rays

• gamma waves

Tags

NGSS.HS-PS4-1

​ ​ (a)   reflection happens when light hits a completely smooth surface.​

• Specular
• Diffuse
• Refraction
• Diffraction

Tags

NGSS.MS-PS4-2

When an object is placed on the focal point in front of a converging lens, the image produced is ___.

• real, reduced, and inverted

• real, enlarged, and inverted

• real, true, and inverted

• There is no image

This image is.....

• inverted and smaller

• inverted and larger

• upright and smaller

• upright and larger

Arrange the colors of the visible light spectrum from highest wavelength to lowest wavelength.

• Blue

• Red

• Yellow

• Green

• Orange