Preassessment unit 6

Fusion in the sun can only occur under conditions of extreme ___ and ___.

• heat and energy

• energy and light

• heat and pressure

• pressure and gravity

The process of how light gets from the sun to the Earth is called ___.

• precipitation

• granulation

• photosphere

• radiation

The ___ of a star determines the color of the star.

• shape

• temperature

• location

• distance

Identify the layers of the sun from center outward.

• radiative zone, photosphere, corona, chromosphere, convenctive zone, radiative zone, core

• core, photosphere, radiative zone, corona, convective zone, radiative zone

• core, radiative zone, convective zone, photosphere, chromosphere, corona

• core, convective zone, radiative zone, corona, chromosphere, photosphere

The sun's core is ___ the Earth's core

• the same size as

• the same temperature as

• cooler than

• much hotter than

How does the energy move outward from the sun's radiative zone?

• convection

• evaporation

• granulation

• gravitation

Arrange the following terms about stars in sequential order:

• main sequence star, nebula, protostar

• nebula, main sequence star, protostar

• nebula, protostar, main sequence star

• protostar, nebula, main sequence star

Which elements make up the majority of the sun?

• oxygen and carbon dioxide

• oxygen and nitrogen

• hydrogen and carbon

• hydrogen and helium

___ ___ is the process where hydrogen atoms are combined and give off tremendous quantities of energy.

• nuclear fission

• nuclear fusion

• gravity

• explosion

In a star ___ atoms of hydrogen fuse together to make ___ atom of helium and lots of energy

• 2, 1

• 3, 1

• 4, 2

• 4, 1