Light Review

Samantha is observing a salt crystal under a microscope. She wants to view more details by enlarging the image of the crystal. Which would allow her to do this?

• increasing the amount of light that shines on the crystal
• decreasing the amount of light that shines on the crystal
• increasing the strength of the objective lens
• decreasing the strength of the objective lens

Which best explains how fiber-optic technology benefits the field of medicine?

• It allows doctors to view internal body structures to help them diagnose illnesses.
• It helps surgeons make more accurate repairs to broken blood vessels.
• It allows doctors to magnify cells so they can identify unhealthy cells that cause cancer.
• It helps surgeons make cuts that are smaller and less painful than traditional methods.

Tags

NGSS.MS-PS4-2

The diagram shows a clear glass lens. Which best describes what happens when light rays move from air, through the lens, and back to air?

• The light rays refract toward a central axis.

• The light rays spread apart as they exit the lens.

• The light rays converge toward a single point.

• The light rays diverge before entering the lens.

Tags

NGSS.MS-PS4-2

Hamid is viewing an image of a bird produced by a set of concave lenses. What must be true about the image?

• It is a virtual image.
• It is upside down.
• It is larger than the actual bird.
• It is capable of being projected.

Rosa writes a story in which the main character turns into a mouse. Which object could she include in her story so the character can see his own face and confirm he has really turned into a mouse?

• an ironed bedsheet
• a polished spoon
• a flat sheet of paper
• a painted cabinet door

Tags

NGSS.MS-PS4-2

A convex mirror is placed to the right of an object. The image formed by the mirror will be a

• real image that appears to be on the right of the mirror.
• real image that appears to be on the left of the mirror.
• virtual image that appears to be on the right of the mirror.
• virtual image that appears to be on the left of the mirror.

Tags

NGSS.MS-PS4-2

Which is one characteristic shared by electromagnetic and mechanical waves?

• Both have a frequency and amplitude.
• Both move due to particles bumping into each other.
• Both are formed by charged particles.
• Both occur as a result of a disturbance.

Tags

NGSS.MS-PS4-1

Which object reflects light with the longest wavelength?

• a yellow book
• a violet flower
• a blue paper
• a green leaf

Tags

NGSS.MS-PS4-2

Which types of electromagnetic waves have frequencies that are higher than those of ultraviolet light but lower than those of gamma rays?

• microwaves
• X-rays
• infrared light
• radio waves

Which type of electromagnetic waves make up the colors of a rainbow seen after a storm?

• visible light
• infrared light
• X-rays
• ultraviolet light