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science
The Sun
Question | Answer |
---|---|
Sun's__________---energy created in the core moves outward through the radiation zone and the convection zone and into the Sun's atmosphere | layers |
__________ is the lowest layer gives off light and about 6,000 K | photosphere |
___________ is the next layer about 2000 km above the photosphere | chromosphere |
Extending millions of km into space, the 2 million K _________ releases charged particles as solar wind | corona |
__________--dark areas cooler than their surroundings | sunspots |
Increase and decrease in a 10 to 11 year pattern called ___________ cycle | solar active |
Sunspots are related to _____________ | intense magnetic field |
Magnetic fields may cause ____________-huge, arching gas columns | prominences |
Violet eruptions near a sunspot are called ________ | solar flares |
Bright ____________(CMEs) appear as a halo around the Sun when emitted in the Earth's direction | coronal mass ejection |
Highly charged ______________ can disrupt radio signals | solar wind particles |
Near Earth's polar areas solar wind material can create light called an __________. | auroras |
How is the energy of the Sun produced? | The energy of the sun is produced by when helium and hydrogen fuse together |
The two types of ________. galaxies are barred and normal | spiral |
A __________ is a group of galaxies | cluster |
______________ galaxies have many different shapes and are usually smaller and less common than other types of galaxies | irregular |
An elliptical galaxy about 2.9 million light-years away is in the constellation of _____________. | Andromeda |
Galaxies shaped like footballs are ________ galaxies | elliptical |
Two irregular galaxies called the _____________________ orbit the Milky Way | Clouds of Magellan |
A _______________ is a large group of stars, gas, and dust held together by gravity | galaxy |
The ____________________ is an explanation for the formation of the universe | Big Bang Theory |
The _________________ causes changes in the light coming from distant stars and galaxies | Doppler Shift |