Question | Answer |
Force that resists motion | Friction |
Galaxy that we live in | Milky Way |
One of the 3 galaxies closest to ours | Small Magellanic Cloud |
One of the 3 basic galactic shapes | spiral |
Large cloud of gas and dust floating in space | nebulae |
An area containing no air or any other matter | vacuum |
Star system containing from millions to billions of stars | galaxy |
Scientists who study outer space | astronomers |
Galaxy that resembles an egg or football | elliptical |
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 solar eclipse | chromosphere or corona |
High-speed streamof particles thattravel outward from holes in the sun's corona and beats upon the earth's upper atmosphere | solar wind |
3 basic types of galaxy shapes | spiral, elliptical, irregular |
Stars that outline a picture in the sky | constellation |
Familiar shape withinthe constellation Ursa Major which contains pointer stars | Big Dipper |
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 |
Brightest star in the night sky | Sirius |
Pole star | Polaris |
Closest star to the earth | Sun |
Brightest star in constellation Leo | Regulus |
Brightest star in constellation Perseus | Algol |
Imaginary line that stretches from pole to pole | axis of rotation |
Star system that contain millions of billions of stars | Galaxy |
Cluster with about 40 galaxies in which we find Earth | Local Group |
How many miles away from the Earth is the sun? | 93 million miles |
Part of the sun's atmosphere closest to the surface | chromosphere |
Hottest region of the sun's atmosphere | corona |
Pair of stars that travel together and rotate around each other as the moon does the earth | binary stars |
Actual explosion of a star | supernova |
What is space like? | no air (vacuum), no air friction, mostly black, weghtlessness. extremes of 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. Actual brightness of a star is called absolute magnitude. |