UNIT 2 Review

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another, caused by a change in its speed.

Front

What is the structure of the Sun from innermost to outermost layer?

Back

Core, radiative zone, convection zone, photosphere, chromosphere, corona.

Front

What is a sunspot?

Back

A sunspot is a location on the Sun's surface that is cooler than its surrounding areas, appearing darker.

Front

What factors affect the speed of sound and light waves?

Back

The type of matter through which the waves travel affects their speed.

Front

What is the difference between reflection and refraction?

Back

Reflection is the bouncing back of light when it hits a surface, while refraction is the bending of light as it enters a different medium.

Front

How do scientists compare the brightness and temperature of stars?

Back

Scientists use observational data and models to compare the brightness and temperature of stars, such as Star X and the Sun.

Front

What is the role of the core in the Sun?

Back

The core is the innermost layer of the Sun where nuclear fusion occurs, producing energy.

Front

What is the photosphere?

Back

The photosphere is the visible surface of the Sun from which light is emitted.

Front

What is the convection zone in the Sun?

Back

The convection zone is the layer of the Sun where hot plasma rises, cools, and then sinks back down.

Front

What is the chromosphere?

Back

The chromosphere is a layer of the Sun's atmosphere above the photosphere, visible during solar eclipses.