The Sun

The Sun is ___% hydrogen by mass.

• 71

• 27

• 2

• 58

The Sun is ___% helium by mass.

• 71

• 27

• 2

• 58

The entire Sun is what state of matter?

• solid

• liquid

• gas

Tags

NGSS.MS-PS1-4

The visible surface of the Sun is called the

• photosphere

• chromosphere

• corona

• radiative zone

• convection zone

Sunspots and prominences are ____ than the gas around them.

• cooler

• hotter

• same temperature

Tags

NGSS.MS-PS1-4

A dark, cool region on the Sun's surface caused by intense magnetic fields blocking normal convection under the surface

• sunspot

• prominence

• solar flare

• coronal mass ejection

• solar wind

What feature of the Sun is responsible for sunspots, prominences, and solar flares?

• magnetic field

• convection

• extreme temperature

• extreme gravity

Tiny, neutral particle with little or no mass that penetrates all matter and is a byproduct of nuclear fusion.

• photon

• neutrino

• neutron

• positron

Tags

NGSS.HS-PS1-8

Process by which four hydrogens are fused to form one helium.

• proton-proton chain

• neutron-neutron chain

• electron-electron chain

• hydrogen-hydrogen chain

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

NGSS.HS-PS1-8

The _____ force holds protons and neutrons together in the atomic nucleus

• strong

• applied

• normal

• gravitational