Science 8 Unit C Sec 2.0

Non-luminous objects …

• Create their own light

• Give off light

• Do not give off light

• Are light sources

An example of regular reflection is…

• Light reflecting off of a smooth mirror

• Light reflecting off of a rough piece of fabric

• Light reflecting off of a beach

• Light passing through a window

If the incident ray hits a plane (flat) mirror at a 35-degree angle, the Law of Reflection states that the angle of reflection should be …

• 35 degrees

• 55 degrees

• 90 degrees

• The Law of Reflection cannot help to assume the angle of reflection

An example of a concave mirror is …

• A car’s side mirrors

• A reflecting telescope

• The curved mirror above the pit in the library

• None of the above are examples of a concave mirror

A convex mirror can also be called a …

• Converging mirror

• Diverging mirror

• Plane mirror

• Caved-in mirror

You are stranded in the woods on a cold, sunny day. You need to start a fire to keep warm, but do not have matches or a lighter. You do, however, have three mirrors - a plane mirror, a concave mirror, and a convex mirror. You know from your science class that when an object is placed in the focal point of a certain type of mirror, it is possible to start a fire. Which of the three mirrors would you use to start a fire?

• Plane mirror

• Concave mirror

• Convex mirror

• A mirror will not help to start a fire

A substance with a higher density (eg. sugar water) will make light pass through ____________________ than a substance with lower density (eg. distilled water).

• slower

• faster

• wavier

• straighter

What is this image an example of?

• The law of refraction

• The law of reflection

• The law of absorption

Which type of object will NOT allow light to pass through?

• Opaque
• Transparent
• Translucent

Blurs light as it passes through

• Transparent
• Translucent
• Opaque
• Refraction

Tags

NGSS.MS-PS4-2