U2L5/L6

The energy from the sun is created by a process called:

• nuclear fission
• nuclear fusion
• nuclear reaction
• nuclear core

Energy is created in the core when two _____________ atoms join together to form a ______________ atom.

• helium, hydrogen
• carbon, hydrogen
• nitrogen, helium
• hydrogen, helium

The temperature inside the sun's core can reach about:

• 15,000 degrees fahrenheit
• 15,000,000 degrees fahrenheit
• 15,000,000 degrees celsius
• 15,000,000,000 degrees celsius

When we look at the sun, what layer are we viewing?

• photosphere
• chromosphere
• corona
• convection zone

What layer gives the sun it's reddish color during a solar eclipse?

• convection zone
• corona
• chromosphere
• photosphere

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

• corona
• prominences
• sunspots
• solarspots

The number of sunspots on the sun varies in a cycle that is about how long?

• 6-8 years
• 10-11 years
• 12-15 years
• 365 days

Huge loops of reddish gas that connect sunspots are called:

• prominences
• solar flares
• coronal loops
• solar wind

When prominences erupt into space releasing gas and energy we call this: 

• solar winds
• coronal outburst
• solar flares
• auroras

The sun makes up about _________ percent of the solar system's total mass.

• 98
• 95
• 99.8
• 98.9