Science Unit D Review Chapter 2
What is bigger than the universe? Nothing
Is the Local Group larger than the Milky Way? Yes The local group is the galactic cluster that the Milky Way galaxy is a part of.
What type of galaxy is the sun located in? Spiral
How does the sun’s energy travel? In waves
The sun’s atmosphere is in the _____. corona Remember- this is only visible during an eclipse.
The apparent magnitude of a star is how bright it ___________. Appears
What is the hottest part of the Sun? The Core
What is a dark area on the Photosphere? Sunspot
The absolute magnitude is how bright a star ___________ is. Actually
The ______ is a fast-moving stream of particles ejected into space. solar wind
Name the 4 stages of a stars life in order. Nebula Protostar Red Giant White Dwarf
How does the sun produce energy? Fusion The process of hydrogen atoms colliding together to produce helium.
A ______ is a brief burst of energy that occurs above a sunspot. solar flare
Two stars the same distance from Earth that give off the same amount of light will appear to have the same ________. magnitude
The sun’s ______ is the layer we see. photosphere
The classification group to which most stars belong is the _________. main sequence
A group of stars, gas, and dust would form a ______. galaxy
A _____ is the distance light travels in one Earth year. light year
Your Place in Space Earth Solar system Milky Way Galaxy Local Group Universe
At the center of the solar system is a… Star
The surface of the sun is the part we can see. It is called the… photosphere
Sunspots can cause brief bursts of energy known as solar- flares
The sun is a huge mass of… gases
The hottest stars in the main sequence are also the… brightest
The Milky Way Galaxy is located in the Local Group, which is a __________ galactic cluster
What type of galaxy is shown in the illustration? spiral
Name the 4 types of galaxies. Spiral Barred spiral Elliptical Irregular
How is the sun responsible for fossil fuels? Organisms that died long ago depended on the sun for energy.
What happens in the convection zone of the sun? Cooler particles are pulled down