Stars
Gravity
Galaxy
Planets
Vocabulary
100
Characteristics used to classify stars (Name 3)
What is color, temperature, size, composition, and brightness?
100
Two factors that determines the strength of the force of gravity between two objects
What is the masses of the objects and the distances between them?
100
A galaxy with a bulge in the middle and arms that spiral out in a pinwheel pattern
What is a spiral galaxy?
100
This planet is closest to the sun
What is mercury?
100
States that every object in the universe attracts every other object.
What is law of universal gravitation?
200
The brightness of a star depends on this
What is size and temperature?
200
What Newton concluded about orbital motion
What is the force of inertia and gravity combined to keep Earth in orbit about the sun and the moon in orbit about Earth?
200
A distant snd extremely bright object that looks like stars
What is a quasar?
200
Contains a star and the planets and ither objects that revolve around the star
What is a solar system?
200
An object with gravity so strong that nothing, not even, light can escape.
What is a black hole?
300
The formation of a star
What is the contracting gas and dust from a nebula that becomes so dense and hot that nuclear fusion starts?
300
The tendancy of an object to resist a change in motion
What is inertia?
300
The galaxy in which we live in
What is the Milky Way?
300
Most planets are made up if these (two things)
What is liquid and gas?
300
The process of building something up gradually by the gathering together of smaller pieces.
What is accretion?
400
Most star's chemical composition
What is 73% hydrogen, 25% helium,and 2% other?
400
The path of an object as it revolves around another objects in space
What is orbit?
400
Stars are born here
What is a nebula?
400
This planet has a mass of two and a half times that of all the other planets combined
What is Jupiter?
400
A spinning neutron star
What is a pulsar
500
The name of the hottest supergiant
What is Rigel?
500
Attracts all objects towards each other
What is gravity?
500
A galaxy shaped like a round or flattened ball,generally containing only old stars
What is a elliptical galaxy?
500
This planet has a diameter of 49,528km
What is Neptune?
500
A large cloud of gas and dust spread out in an immense volume.
What is a nebula
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