7th Mod 5: Light

A purple neon sign emits light waves with which of the following wavelengths?

• red and blue wavelengths
• purple wavelengths
• all wavelengths but purple
• all wavelengths

Tags

NGSS.MS-PS4-2

Use the diagram of the plane mirror to answer the following questions. In the diagram, II is a(n) _______________ image.

• Real image
• Virtual image
• Both Real and Virtual Image

Tags

NGSS.MS-PS4-2

Which statement about the image the person sees is FALSE?

• The person sees the image due to reflected rays
• The image is the same size as the object.
• The image would appear the same in a convex mirror.
• The image is sharp because the mirror is smooth.

Tags

NGSS.MS-PS4-2

Light bends as it passes from air into glass at an angle due to __________.

• reflection
• refraction
• absorption
• diffusion

Tags

NGSS.MS-PS4-2

A convex lens could also be called a ______ lens.

• concave
• diverging
• converging
• diffusing

Tags

NGSS.HS-PS4-5

What is the name of the line drawn perpendicular to the surface where a light ray strikes?

• incident ray
• reflected ray
• normal
• plane of reflection

Tags

NGSS.MS-PS4-2

Blackout curtains are designed to keep light out of space. These curtains are made using material that is ________________.

• transparent
• opaque
• translucent

True/False: Light travels faster in a vacuum than does in oil.

• True
• False

The cells in your eye that help you see in dim, or low light, conditions are called _____________ cells.

• cone

• rod

• convex lens

• False

The point where light rays converge to a point is called the _________ point.

• focal

• focal length

• wavelength

• angle of refelction