Ch.22 Kshoot

Two spiral galaxies come together to make an irregular galaxy

Helium is denser than Hydrogen

Earth has a counterclockwise rotation on its axis

A light-year is a measure of distance

What type of galaxy is this?

This solar feature are shown as the sudden increases in brightness

Stars initially form from planetary nebulae

Which is the average distance between Earth and the Sun?

A star enters the Main Sequence once it begins nuclear fusion

The Full Moon is the faintest object in the sky

What makes up most of our universe?

What ancient star grouping do modern astronomers use to divide the sky into regions?

What does the Big Bang Theory state?

Which layer in the Sun is identified by number 4

Where in the Milky Way is our solar system located?

Which is more important for determining the fate of a star?

What might change, depending on the distance to a star?

Which number is 5

The Sun will eventually become a neutron star

Which layer in the Sun is identified by number 2

The hottest stars will exhibit a red color

Which layer in the Sun is identified by number 6

CMEs and Flares are responsible for the Northern/Southern lights that we see

This solar feature is a cloud of gas that makes loops/jets in the corona

Which characteristics can be studied by analyzing a star's spectrum

Which astronomer(s) was it that first identified constellations?

We see objects (like stars) move West to East through the sky