Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

18 Cards in this Set

  • Front
  • Back
The most important star to the earth.
How does the sun benefit the earth?
provides light, heat and energy that we need to survive.
How far away is the sun from the earth?
93 million miles
What is the hottest region of the son?
the core
The sun's visible surface is called the
What are the dark patches on the sun's surface caused by the sun's magnetic field?
loops of cool gas erupting far from the chromosphere
solar prominences
How are the solar prominences suspended in space?
by the sun's magnetic field
Tremendous bursts of energy caused by sudden changes in the sun's magnetic field
solar flares
the hottest region of the sun's atmosphere; it extends hundreds of thousands of miles from the sun's surface . . .
colossal corona
A faint wind of high speed gas particles that stream into space from the sun's corona
solar wind
What unit is used to measure great distances
light year
a group of two stars that circle around each other
binary star
the violent explosion of a star
super nova
absolute magnitude
the actual brightness of a star; depends on the amount of light it produces no it's distance
apparent magnitude
the apparent brightness of a star that depends on:
1. actual brightness
2. distance from earth
the lower the number the brighter the star
occurs when a star flares up many times than it's normal brightness