5 Written Questions
5 Matching Questions
- What is the vertical axis on the H-R Diagram?
- planetary nebula
- Apparent magnitude
- a A large cloud of gas and dust in space, spread out in a immense volume. Where stars are "born."
- b The brightness of a star as seen from Earth.
- c An imaginary pattern of stars in the sky
- d Absolute magnitude
- e A huge cloud of gas that is created when the outer layers of a red giant star drift out into space
5 Multiple Choice Questions
- The blue-white hot core of a star that is left behind after its outer layers have expanded and defined out into space. The death of low to medium-mass stars
- a graph relating the surface temperatures and absolute brightnesses of stars
- When the contracting gas and dust becomes so hot that nuclear fusion starts.
- Decreasing surface temperature
- temperature (color), mass, and absolute magnitude (also diameter size, stage in life cycle)
5 True/False Questions
neutron star → When gravity pulls some of the gas and dust in a nebula together and there is enough mass to form a star (nuclear fusion has not begun)
When a low mass star runs out of hydrogen fuel, what happens next? → Main Sequence
Where is the sun located on a H-R Diagram? → yellow and middle (pretty close to center)
After a supernova explosion, if the core remaining is greater than 5 solar masses, what is formed? → Diagonally across the diagram from bright and hot to dim and cold.
Solar Mass → main sequence star, 4.6 billion years old, middle of life, medium sized, yellow- 6,000 degrees celsius, center of our solar system