science topic 12 Study

Solar system

consists of the sun, planets, their moons ,and smaller objects

Astronomical unit

The distance measured from the center of the sun to the center of the earth

Sun

A gaseous body Mach larger than anything in the solar system

Planet

A round, orbits the sun, and cleared out the region of the solar system along its orbit

Electromagnetic

A energy that can travel in the form of waves

Visible light

light you can see

Spectrum

Light that separates into different colors with different wavelengths

Wavelength the distance between the crest of one wave and the crest of the next wave

Telescopes

Instruments that collect and focus light and other forms of electromagnetic radiation

Complement

Data obtained by other methods

Nebula

Large cloud of gas and dust containing an immense volume of material

Protostar

First stage of the stars formation

White dwarf

Blue white core that is left behind cools and becomes a white dwarf

Supernova

An explosion

Apparent brightness

Brightness seen from earth

Absolute brightness

The brightness the star would have if it were at a standard distance from earth

Galaxy

Is a group of single stars, star systems, star clusters, dust and gas bound together by gravity

Universe

Space and everything in it

Light-year

Is the distance that light travel in one year