Unit 4: Light

What is electromagnetic radiation that you can see?

• light
• ultraviolet waves
• radio waves
• microwaves

What is the range for wavelengths of light waves?

• greater than 1,000 nm
• 700 nm to 1,000 nm
• 400 nm to 700 nm
• 0 nm to 400 nm

True or false: Electromagnetic waves can travel through a vacuum where no matter is present.

• True
• False

Which term refers to a material that allows most of the light that strikes it to pass through, and through which objects appear blurry?

• transparent
• opaque
• translucent
• reflective

Which term refers to a material that allows almost all of the light striking it to pass through, and through which objects can be seen clearly?

• transparent
• opaque
• translucent
• reflective

When a wave is reflected from a surface, the angle of reflection is equal to the angle of incidence. This is summed up in which law?

• law of refraction
• law of incidence
• law of reflection

What are the colors of the spectrum? ROYGBIV

What is a mirror that curves inward called?

• convex mirror
• focal mirror
• plane mirror
• concave mirror

Which kind of mirror curves outward, like the back of a spoon?

• convex mirror
• focal mirror
• plane mirror
• concave mirror

What is a transparent object with at least one curved side that causes light to change direction?

• lens
• convex mirror
• plane mirror