The Sun, Nuclear Fusion, and EMS Quiz

Areas of gas on the sun's surface that are cooler than gases around them are called:

• corona
• prominences
• sunspots
• solarspots

Most of the sun’s energy is a result of

• nuclear fusion  
• nuclear fission
• atomic reactions
• coronal mass ejection

The sun converts matter into energy in the

• corona.
• radiative zone
• convection zone
• core

What elements make up most of the sun’s mass?

• carbon and oxygen
• carbon and hydrogen
• helium and nitrogen
• hydrogen and helium

How much of the solar system's total mass is the sun?

• Less than 10%
• Approximately half
• 73.8%
• Over 99%

The particles of the corona extends into space for millions of kilometers and spreads into streams of electrically charged particles called:

• coronal discharge
• solar flares
• coronal ejection
• solar winds

Which electromagnetic waves have the highest frequencies and the shortest wavelengths?

• microwaves
• visible light
• gamma rays

Which has the SHORTEST wavelength and, therefore, the highest frequency/most energy

• Radio waves
• Ultraviolet Rays
• Gamma Rays
• X-rays

Which section of the spectrum is the ONLY one we can see?

• X-rays
• Visible Light
• Gamma Rays
• Ultraviolet Rays

Which of the following electromagnetic waves has the lowest energy?

• gamma ray
• infrared wave
• visible light wave
• microwave