Question | Answer |
The Sun occupies ______ of our solar system. | 99.9% |
The energy of the sun is due to the | fusion process |
The fusion process gives off | light and heat |
The sun's core is very dense gas at _____ degrees. | 15,000,000 |
Energy of the sun travels through | radiative zone, convection zone, photosphere, chromosphere and finally the corona. |
Which layer of the sun do we see from earth? | photosphere |
It takes the _____minutes for light to travel from the Sun to the Earth. | 8 |
What is the outermost layer of the Sun? | Corona |
What is Auroras? | Glowing lights produced by electrically charged solar winds. |
Fusion produces _______ in the sun. | energy |
Fusion may vary in | size, brightness and temperature |
Light Year | The distance light travels in one year |
Amount of light(temperature) and distance from earth determines | brightness |
Parallax is the | apparent shift in position of an object |
The size of the sun is ______ times bigger than earth. | 100 |
You need a telescope to see | white dwarfs (star) |
What determines the white, blue or red colors of stars? | Temperature |
Higher mass stars develop more _________ than lower mass stars. | quickly |
The main sequence stage of a lower mass star produces energy through | fusion of hydrogen into helium |
Lower mass stars will last | billions of years |
Our sun has been a main sequence star for 4.6 billion years and will be one for another _______years | 5 billion |
Pulsars | strong emissions of xrays occur and sometimes radio waves |
Supernovas collapse into a ______. | black hole |
The Milky way galaxy measures more than | 100,000 years from the sun |
What makes up our galaxy | space, stars and planets |
Milky Way galaxy is a ___________ galaxy | spiral |
The center bulge of a spral galaxy is a _______________. | black hole |
Spiral galaxies also have | sprial arms |
Elliptical galaxies are shaped like | eggs |
Irregular shape galaxies are | w/o a definite shape |
Our galaxy has a black hole | with a mass 3 million times that of the sun. |
black holes are invisible as gases are pulled toward the | center |
The universe consists of | space, energy and matter |
The doppler effect is | a change in the observed wavelength |
The universe began during | THE BIG BANG THEORY |