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Definition
| A Dark area on the sun that is cooler than its surrounding areas. It is an area of intense magnetic fields |
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Definition
| A cycle where the number of sunspots are low but increase. Lasts 11 years. |
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| The solar activity cycle is caused by changing solar magnetic field. The more solar activity, the more sunspots. |
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| How can you tell the number of sunspots there are on a graph? |
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Term
| How does activity on the sun cause an aurora? |
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Definition
| The activity on the causes an aurora by having solar flares or by having the sunspot cycle end. Plus, interaction between the solar wind and Earth's magnetosphere. |
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Definition
| An explosive release of energy that comes from the sun and that is associated with the magnetic disturbances on the sun's surface. Solar flares make auroras occur more often on Earth. |
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True or False:
Nuclear fusion reactions that combine with smaller nuclei to form more massive ones are the source of the sun's energy? |
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Definition
| A loop of relatively cool incandescent gas that extends above the photosphere and above the sun's edge as seen from Earth. |
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| Which stars have the highest absolute magnitude? |
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Definition
| The starts that have the highest absolute magnitude are the Red Giants. |
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Term
| BY looking at the x-axis and y-axis, can you tell in which direction he starts move when their temperature and absolute magnitude are the dimmest and coolest? |
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Definition
| The stars move down and to the right. |
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Term
| The most common color of star in the main sequence |
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Definition
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| Type of star a main sequence star becomes when it loses its energy |
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Definition
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Term
| Two forces that have to equal each other for a star to become stable |
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Definition
| Outward force due to fusion and radiation and the force of gravity. |
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Definition
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Term
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Definition
| THe universe was hot and small and then eventually cooled and expanded. |
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Term
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Definition
| The universe was hot and small and then eventually cooled and expanded. |
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Term
| How does the presence of cosmic background radiation support the big bang theory? |
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Definition
| It indicates that the universe was once compact and hot and that it cooled and expanded. |
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Term
| Cosmic background radiation |
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Definition
| It is electromagnetic radiation that fills the Universe. The radiation can only be detected with a radio telescope which makes it show as a faint glow |
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Term
True or False:
The doppler redshift is a measurement of celestial objects moving outward from Earth. |
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Definition
True
Because the distant galaxies have red shifted spectra which indicates that these galaxies are moving away from Earth. |
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Term
| Process that formed the solar system |
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Definition
| Matter spread through the universe gathered into clouds of gas and dust -> explosion of a nearby supernova-> gravity -> hotter and denser |
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Term
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Definition
New moon
Waxing Crescent
First QuarterWaxing Gibbous
Full Moon
Waning Gibbous
Third Quarter
Waning Crescent |
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Definition
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| Number of times the Moon rotates on its orbit around the Earth. |
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Definition
Once a month
27.3 days that the moon orbits Earth
29.5 days on its axis |
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Term
| Amount of times energy is released in the penny lab. |
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Definition
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Term
| Nuclear________ is the reaction modeled above. |
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Definition
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Term
| Ho many hydrogen atoms does it take to form a helium atom? |
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