Gr.6 Ch. 4.1-4.4 Flashcards
Dark patches on the Sun’s photosphere
Sunspots
The study of outerspace and all it contains
Astronomy
Part of the sun visible only during a solar eclipse
Chromosphere or Corona
High speed stream of particles that travels outward from hole in the sun’s Corona and beats upon the earth’s upper atmosphere
Solar wind
The three basic types of galaxies shapes
Spiral, elliptical, and irregular
Stars that outline a picture in the sky
Constellation
Familiar shape within the constellation Ursa Major which contains the pointer stars
Big Dipper
The hottest region of the sun
The core
Streams of gas erupting from the chromosphere and returning in loop-like fashion
Solar prominence
Spiral arms attached to a straight “bar” that runs through a galaxy
Barred spirals
The force that resists motion
Friction
An area that contains no air
Vacuum
Large clouds of gas and dust floating around in space
Nebulae
The brightest star in the night sky
Sirius
The polestar is known as this
Polaris
The closest star to earth
The sun
The brightest star in the constellation Leo
Regulus
The brightest star in the constellation Perseus
Algol
This is the imaginary line that stretches from pole to pole
The Earth’s axis of rotation
A star system containing millions to billions of stars
A galaxy
The cluster with about 40 galaxies in which we find earth
Local Group
The sun is located this far away from earth
93,000,000 miles
The part of the sun’s atmosphere closest to its surface
The chromosphere
The hottest region of the sun’s atmosphere
The chromosphere
A pair of stars that travel together and rotate around each other as the moon does the Earth
A binary star
The actual explosion of a star
Supernova
Identify the following constellations
Southern Cross, Andromeda, Cassiopeia, Orion, The Great Bear, Sagittarius the archer Leo the lion, Gemini
Name elements of space that are different from Earth and its atmosphere
No air so there is a vacuum, no air so there is no friction, it is mostly black, things are weightless, there are extreme temperatures
What is the difference between apparent magnitude and absolute magnitude?
The actual brightness of a star is called its absolute magnitude based on how much light the star actually produces. Apparent magnitude is the measurement used to describe the brightness of a star as it appears from Earth. It depends on how bright it is (actual brightness) as well as its distance from Earth.
