8th science "the sun"

How much of the sun's mass is made up of hydrogen?

• 3/4

• 1/4

• 2/3

• 1/2

How much of the sun's mass is made up of helium?

• 3/4

• 1/4

• 2/3

• 1/2

What percent of the mass of the solar system is contained within the sun?

• 99.85%

• 98.65%

• 97.44%

• 99.38%

Which part of the sun's interior produces enormous amounts of energy through nuclear fusion?

• core

• radiation zone

• convection zone

The core of the sun has .....

• Extremely high temperature and pressure

• Extremely high temperature and low pressure

• Extremely low temperature and pressure

• Extremely low temperature and high pressure

the process by which hydrogen atoms join to form helium in the sun

• nuclear fusion

• electromagnetic waves

• solar winds

• convection

The radiation zone of the sun is _____.

• dense

• light

• • The radiation zone of the sun is so dense that it takes ________ years for energy to move through it.

• more than 100,000

• about 50,000

• more than 150,000

• about 75,000

Energy moves in the form of __________.

• electromagnetic waves

• radio waves

• gravitational waves

• transverse waves

• Energy in sun’s core moves _________ towards the convection zone. 

• outward

• inward