Astronomy B ( fall 2015) Flashcards
a supernova is the explosion of______
a nebula
A star is born when___
nuclear fusion starts
What creates sunspot storm on the sun
a change in temperature on the surface of the sun caused by strong magnetic fields
Where do baby atoms come from?
Helium through iron is formed in the cores of stars
What is located at the center of our galaxy?
A huge black hole
What fuels the sun?
Hydrogen
Where is the asteriod belt located
Between Mars and Jupiter
What are Oort Clouds
Distant comets 50,000 - 100.000 AU from the Sun
What is the Kuiper belt
Short period comets just beyond Neptune
How far back in time was the flash of light from the Big Bang?
13.8 billion years ago
What do the first four outer planets have in common?
They are much larger than the Earth and are made mainly of hydrogen and helium
Both reflecting and refracting telescopes are designed to
gather and focus visible light
What is the convective Zone
the layer of the sun that surrounds the radiative zone where energy moves as flowing cells of gas
What is the core?
extremely hot center of the sun where nuclear fusion takes place
What is Plasma?
High energy, high temperature form of matter; electrons are removed from atoms, leaving each atom with a positive electrical charge