Test Tues Feb. 18th Unit 7 Universe and Stars Vocab. Flash Cards

What is a dark area on the photosphere of the Sun that is cooler than the surrounding areas?

• Sunspot

• Prominence

• Solar flare

• Galaxy

What is an explosive release of energy from the Sun associated with magnetic disturbances?

• Cluster

• Solar flare

• Prominence

• Sunspot

Areas where as many as 1000 galaxies are densely concentrated is a _________.

• Clusters

• Prominence

• Voids

• Galaxy

What is a natural object that orbits a planet?

• Planet

• Star

• Void

• Moon

What is a system of planets and other bodies that orbit a star?

• Galaxy

• Cluster

• Void

• Solar system

What is shaped like a pinwheel with two or more arms extending from the center?

• Spiral galaxy

• Void

• Cluster

• Solar system

What is the measure of how bright a star would be if it were seen from a standard distance?

• Absolute magnitude

• Apparent magnitude

• Light year

• Astronomical unit

What is a large spherical body in space that orbits a star and does not produce its own light?

• Star

• Moon

• Galaxy

• Planet

What are large areas in space where very little matter exists within them?

• Solar systems

• Galaxies

• Voids

• Clusters

What is a collection of stars, dust, and gas bound together by gravity?

• Universe

• Solar system

• Galaxy

• Cluster