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Science Test 7

Chapter 4 (4.1-4.4)

QuestionAnswer
The study of outer space and all that it contains astronomy
Dark patches on the sun's photosphere sunspots
Part of the sun visible only during a solar eclipse Chromosphere or corona
A high-speed stream of particles that travels outward from holes in the sun's corona and beats upon the earth's upper atmosphere Solar wind
The three basic types of galaxy shapes 1)Spiral 2)Elliptical 3)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 Core
Streams of gas erupting from the chromosphere and returning in looplike 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 pole star is called Polaris
The closest star to the earth is The sun
The brightest star in the constellation Leo is named Regulus
The brightest star in the constellation Perseus is named Algol
What is the imaginary line stat stretches from pole to pole Axis of rotation
What is a star system that contains millions to billions of stars called? Galaxy
The cluster with about 40 galaxies in which we find Earth is called Local Group
The sun is located how far from earth? 93 million miles
What part of the sun's atmosphere is closest to its surface Chromosphere
What is the hottest region of the sun's atmosphere Corona
What is a pair of stars that travel together and rotate around each other as the moon does the earth A binary star
What is the actual explosion of a star Supernova
Describe what space is like including 3 things that make space different from Earth and its atmosphere 1)no air/a vacuum 2)no air friction 3) mostly black 4) unusual activities/weightlessness 5) extreme temperature.
What is the difference between apparent magnitude and absolute magnitude? Apparent magnitude is the measurement used to describe the brightness of a star as it appears from Earth. The actual brightness of a star is called its absolute magnitude.
Created by: sbarna411
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