Earth Science Fall Final

Earth is a part of the Milky Way Galaxy

• True

• False

Our solar system consists of one star, eight planets planets, satellites, asteroids, and comets

• True

• False

What is an AU?

I Stands for Astronomical Unit

II The average distance between Earth and the Sun

III Is about 93 million miles

• I only

• I and II only

• II and III only

• I, II, and III only

A star is discovered with a high percentage of heavier elements. What does this information tell us about the star?

• It’s an older star that has been evolving over time

• It’s a new star but it’s massive

• It's a new star formed from a giant cloud of hydrogen and helium

• It’s a star formed from an exploding planet

Scientists believe elements heavier than iron...

• created during the big bang

• created during supernova explosions

• are created by nuclear reaction in stars

• can only be created in a lab

Whenever a star begins to fuse Helium into carbon and oxygen in its core what stage of its life cycle is it in?

• Main sequence

• Red Giant

• Protostar

• Supernova

After starting out as a nebula, a star will become a ________________

• Protostar

• Neutron Star

• Main Sequence

• Red Giant

The diversity of stars you can see at night is vast. There are big stars and small stars. A small star will go through all the following stages EXCEPT: (multi-select)

• Red Giant

• White Dwarf

• Main Sequence

• Supernova

Which factor is most important when determining how long a star will live?

• Mass

• Color

• Temperature

• Brightness

Which of the following claims is most true.

• Sunspot activity peaks every 10-11 years.

• Sunspot activity is relatively predictable.

• In the 1800s sunspot activity was highest in the year 1805.

• In the 1900s sunspot activity was highest in the year 1980.