Astronomy Chapter 1

T or F: the Milky Way is the galaxy that contains the Solar System...

True

A large body in space that consistently makes its own light (instead of merely reflecting another body's light) is called...

a star

_________ is the study of the objects that lie beyond our planet Earth and the processes by which these objects interact with one another

astronomy

_______ ________, a body that orbits the sun, is not a satellite of a planet and is massive enough to pull itself into a spherical shape but not massive enough to clear out other bodies in and near its orbit.

dwarf planet

By the term universe, astronomers mean...

everything that we can observe

T or F: Globular clusters are tight groups of hundreds of thousands of very young stars...

false

You are on a camping trip, far away from city lights. You look up into the dark night sky, and see lots of stars, some brighter, some dimmer. All the stars you see with your unaided eye are...

in the Milky Way Galaxy

The astronomical unit (AU) as defined by astronomers is...

the average distance between the Earth and the Sun

A light year is...

the distance that light travels in one year

Of these which is the closest to us? -Mars -the moon -the sun -center of the Milky Way -the closest spiral galaxy

the moon

The Andromeda Galaxy is a spiral galaxy approximately 2.5 million light-years from Earth, and the nearest major galaxy to the Milky Way...

true