1. Which is the origin of the sun’s energy?
A. charged particles
B. burning hydrogen
C. solar flares
D. nuclear fusion
2. Which of the following protects Earth's atmosphere from solar wind?
A. convection currents
B. radiative zone
C. magnetosphere
D. hydrogen atoms
3. How have astronomers formed their ideas about the layers of the sun?
A. observing all the layers during total solar eclipses
B. using theoretical models combined with known data
C. Developing mathematical models based only on known data
D. making direct observations of the sun's layers
4. Two astronomers are viewing temperature data from each of the sun's layers, but the layers aren't identified. Describe one way the scientists can use temperature to identify which layer they are studying.
A. The lowest temperatures are from the core.
B. The highest temperatures are from the corona.
C. The lowest temperatures are from the photosphere.
D. The highest temperatures are from the radiative zone.
B. The highest temperatures are from the corona.
1. Which is the origin of the sun’s energy?
A. charged particles
B. burning hydrogen
C. solar flares
D. nuclear fusion
D. nuclear fusion
2. Which of the following protects Earth's atmosphere from solar wind?
A. convection currents
B. radiative zone
C. magnetosphere
D. hydrogen atoms
C. magnetosphere
3. How have astronomers formed their ideas about the layers of the sun?
A. observing all the layers during total solar eclipses
B. using theoretical models combined with known data
C. Developing mathematical models based only on known data
D. making direct observations of the sun's layers
B. using theoretical models combined with known data
4. Two astronomers are viewing temperature data from each of the sun's layers, but the layers aren't identified. Describe one way the scientists can use temperature to identify which layer they are studying.
A. The lowest temperatures are from the core.
B. The highest temperatures are from the corona.
C. The lowest temperatures are from the photosphere.
D. The highest temperatures are from the radiative zone.
B. The highest temperatures are from the corona.
Which is the cause of the sun's magnetic properties?
rapid spinning of metals in the core
uniform clockwise rotation of charged particles
uneven churning of plasma
upward movement of super-heated gases in the convective zone