The motion of a body when only the force of gravity is acting on it.
What is free fall
100
This is why scientists study distant galaxies.
What is to see what early galaxies look like.
100
Name one of the electromagnetic radiation that is blocked by the atmosphere.
What is gamma rays, x-rays, or some ultraviolet
100
He thought the Earth was at the Center of the universe, and the sun, moon, and other planets revolved around the Earth.
What is Ptolemy
100
A graph that shows the relationship between the stars temperature and absolute magnitude
What is H-R Diagram
200
What is it called when an object is moving quickly towards you in space?
What is blue shift
200
The curved path that an object follows when thrown, launched, or otherwise ejected near the Earth.
What is projectile motion
200
the time when the sun crosses the plane of the earth's equator, making night and day of approximately equal length all over the earth
What is vernal equinox
200
This is the location on the H-R diagram where most stars lie
What is main sequence (middle)
200
a apparent shift in the position of an object when viewed from different locations.
What is parallax
300
List the three types of galaxies.
What is -spiral -elliptical -irregular
300
A tight group of stars that look like a ball and contains up to 1 million stars.
What is globular cluster.
300
The constant velocity of a following object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity.
What is terminal velocity
300
The study of the origin, properties, processes, and evolution of the universe.
What is cosmology.
300
The theory that states the universe began with a tremendous explosion 13.7 billion years ago.
What is the big bang theory.
400
What is it called when an object is moving quickly away from you in space?
What is red shift
400
A star that has collapsed under gravity to the point that electrons and patrons have smashed together to form neutrons
What is neutron star
400
This is what scientists think will happen to the universe.
What is the universe will expand forever.
400
The acceleration of an object depends on the mass of the object and the amount of force applied. (Law)
What is Newton's second law
400
the tendency of all objects to resist any change in motion.
What is inertia
500
A very luminous starlike object that generates energy at a high rate
What is quasar
500
He thought that the sun was at the center of the universe, and the Earth and other planets revolve around the sun.
What is Copernicus
500
A large cloud of dust and gas in interstellar space, the region where stars are born and explode
What is nebula
500
This is why most telescopes are in space.
What is atmosphere causes starlight to be blurry and shimmery.
500
An object at remains at rest and an object in rest, and an object in motion remains in motion at a constant speed in a straight line unless acted upon by unbalanced force