Solar System and Sun

The cloud of gas and dust that formed our solar system.

• solar nebula

• nebula

• solar nuclei

• solar dust

The extra matter at the center of the solar nebula became the

• inner planets.

• sun.

• moon.

• super nova.

After the solar nebula collapsed, its center became very hot and

• more nebulas were formed.

• it formed into a sphere.

• planetesimals formed.

• it exploded.

Planets began to form as

• planetesimals collided and combined.

• planetesimals flattened into rotating disks.

• temperatures in the solar nebula fell.

• gravity held together the solar nebula.

Tags

NGSS.MS-ESS1-2

How many days does it take for the equator of the sun to complete one rotation?

• 35 days

• 31 days

• 28 days

• 25 days

Giant eruptions on the sun's surface are called

• solar flowers.

• solar flares.

• sun spots.

• solar eruption.

The visible surface of the sun.

• chromosphere

• atmosphere

• photosphere

• corona

A dense layer of the sun where light and energy are blocked and sent into different directions.

• convective zone

• flare zone

• core

• radiative zone

When two or more nuclei fuse to form another nucleus; the source of the sun's energy.

• nuclear fusion

• nuclear bond

• nuclear flare

• nuclear fusing

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Cooler, darker areas of the photosphere of the sun.

• son spots

• sun spots

• sun holes

• sun flares