Earth Science Test 7: Stars Tuesday, Dec 2, 2014

Identify the life stages of stars like the sun (Main Sequence)  Nebula  Protostar  Star like the sun  Red Giant  Planetary Nebula  White Dwarf

Identify the life stages of MASSIVE (Main Sequence) stars  Nebula  Protostar  Massive star  Red supergiant  Supernova  Neutron star

Explain why constellations seen in January are different from those seen in July.  Constellations in January are different than July because:  **the position of the Earth in the solar system is different  **the sun’s path is also shining on a different part of the Earth  **Therefore, people are looking at a different part of the night sky.

Define the Big Bang theory of the formation of the universe  All matter & energy in the universe was compressed into an extremely small volume that 13 to 15 billion years ago exploded & expanded in all directions.

Identify & explain one piece of evidence for the Big Bang theory  Cosmic Background Radiation  Radiation evenly distributed in space, considered to be leftover from the Big Bang.

Identify & explain one more piece of evidence for the Big Bang theory  Red Shift (Red is the color for longer wavelengths)  The observed wavelength of the light is longer when objects are moving away from us. The light is shifted towards the red end of the spectrum, RED SHIFT. A force that opposes gravity, pushing galaxies further apart.