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Science 1
Science Chapter 20
| 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 |
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