Reteach_04.08_5.8C

Multiple Choice

The table lists some physical properties of two objects.

Based on their properties, which of the objects is MOST LIKELY a metal?

• Object 1, because it is a solid that is less dense than water

• Object 2, because all metals float in water

• Object 2, because metals conduct thermal energy and electricity

• Object 1, because it can be used to provide insulation for thermal energy

Open Ended

How does light behave?

Give me an example of a substance that transfer light from one place to another.

Sentence stem: Light behaves..... An example is....

Multiple Choice

For a class demonstration a student turned off the lights in the classroom. The student then shined light from a flashlight through a hole in a piece of cardboard. The class saw the narrow beam of light continue until another student placed a mirror in the light’s path.

What did you observe about the movement of the light?

The light did not continue past the mirror because —

• light cannot travel very far

• the mirror absorbed all the light

• he light was refracted back to the light source

• light travels in a straight line and cannot go around objects

Open Ended

What is refraction?

Sentence Stem: Refraction is....

Multiple Choice

The student is observing part of a plant with a microscope.

Which statement describes a behavior of light in the microscope?

• Light travels through the microscope lens without changing direction.

• Moving in straight lines causes light to increase in brightness.

• Light refracts through the lens of the microscope.

• Moving in straight lines keeps light from reflecting.