Characteristics of Stars
A large celestial body composed of gas and emits light
What is a star?
A large cloud of gas and dust in interstellar space. A region where a star is born.
What is a nebula?
Stars appear to move in circular paths through the sky
What is the earth rotates on its axis?
A group of stars organized in a recognizable pattern.
What is a constellation?
The study of origin, properties, processes, and evolution of the universe.
What is cosmology?
300,000 km/s
What is the speed of light?
All objects in the universe attract each other with a force that increases as the mass of any object increases.
What is Newton's Law of Universal Gravitation?
The brightest star in the night sky.
What is Sirius?
A collection of stars, dust, and gas bound together by gravity.
What is a galaxy?
All the matter and energy in the universe was compressed into an extremely small volume that exploded and expanded in all directions
What is the Big Bang?
An observed change in the frequency of a wave when source or observer is moving
What is the Doppler Effect?
10,000,000 C
The heaviest element formed in the core of a star.
What is iron?
What is a quasar?
Radiation uniformly detected from every direction in space; considered a remnant of the big bang.
What is cosmic background radiation?
Indicates the surface temperature of a star
What is color?
The second and longest stage in the life of a star.
What is the main sequence stage?
Order the colors of the stars from hottest to coolest:
orange, red, white, blue, yellow
What is blue, white, yellow, orange, red?
Name the types of galaxies.
What is spiral, elliptical, and irregular galaxies?
Scientist who made collecting new spectra easier.
Who is Edwin Hubble?
An apparent shift in the position of an object when viewed from different locations
What is parallax?
The most common element in most stars.
What is hydrogen?
The change in position of a nearby star as seen from different points on Earth's orbit compared with the position of a faraway star.
What is a parallax?
Describe the Milky Way Galaxy in terms of galaxy types.
What is spiral, with flat arms?
A type of matter that does not give off light but has gravity that we can detect.
What is dark matter?