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CRCT Question

CRCT Question. What kind of weather is associated when a cold front approaches an area? sunny skies drizzly rain thunderstorms, heavy rain, or snow hot, muggy weather. Agree or Disagree . The universe is about 13.7 million years old The milky way is a spiral galaxy

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CRCT Question

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  1. CRCT Question What kind of weather is associated when a cold front approaches an area? sunny skies drizzly rain thunderstorms, heavy rain, or snow hot, muggy weather

  2. Agree or Disagree • The universe is about 13.7 million years old • The milky way is a spiral galaxy • Stars are classified according to age, picture, temperature • Blue-white stars are the hottest • Astronomers believe that the universe is expanding • We use radiation as evidence that the galaxies are moving apart • Salinity of the ocean is approximately 35%

  3. Are stars still present in the sky during the day time? • Yes, we just can’t see them because their dim light is overwhelmed by the brightness of the sun during the day.

  4. 0 Galaxies are based on their: • Size • Shape • Brightness • Density What is it most based on?

  5. Life Cycle Of Stars Video

  6. viI. How a star is born?

  7. As the particles pull closer together the temperature increases. At 10,000,000o C fusion takes place and energy radiates outward through the condensing ball of gas. Another view of Orion A. Nebulas

  8. B. Hydrogen Fusion: Energy of the Stars • Stars have large amounts of hydrogen gas. • 4 hydrogenatoms fuse forming 1 atom of helium • The mass of 4 hydrogen atoms is greater than the mass of 1 helium atom; the excess mass is converted to a tremendous amount of energy.

  9. This hydrogen  helium fusion can power a star for billions of years

  10. Fusion uses up a star’s hydrogen supply rapidly casing the core to heat up and the outer temperature to fall. (Life cycle of the star) Star expands and becomes a red giant Red Giant C. Red Giant

  11. Core continues to heat and star expands to a super giant. As the core uses up its helium supply, the outer layers escape into space and the remaining core is white hot and called a white dwarf. White dwarfs D. Stellar Evolution

  12. When no more material is left in the core it explodes into a supernova. Smaller stars become neutron stars and most massive will collapse into a black hole. Neutron Star E. Stellar Evolution

  13. Black Holes-nothing can escape, even light!

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