The Sun 101

What is the Sun primarily made of?

• Nitrogen

• Hydrogen

• Oxygen

• Carbon

What is the process by which the Sun releases energy in the form of radiation?

• Nuclear fission

• Thermonuclear fusion

• Chemical reaction

• Electromagnetic induction

What is the temperature in the core of the Sun?

• 10 million degrees Fahrenheit

• 100 million degrees Fahrenheit

• 27 million degrees Fahrenheit

• 50 million degrees Fahrenheit

What is the Sun's magnetic field called?

• Thermosphere

• Ionosphere

• Magnetosphere

• Heliosphere

What will the Sun eventually become when it runs out of hydrogen fuel?

• Neutron star

• White dwarf

• Red giant

• Black hole

What is the approximate mass of the Sun compared to the rest of the solar system?

• 50%

• 75%

• 99.8%

• 90%

What protects the planets from harmful cosmic radiation in the solar system?

• Solar wind

• Gravitational force

• Magnetic field

• Atmospheric pressure

What causes dark areas on the Sun's surface called sunspots?

• Solar flares

• High pressure zones

• Low temperature regions

• Strong pockets of magnetism