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100
Terminal velocity is achieved when these 2 forces balance each other out
What is gravity and air resistance
100
What is the H-R diagram
What is a graph that shows the relationship between a star’s surface temperature and absolute magnitude
100
Which stars are mainly located in the top right of the H-R diagram?
What are red giants/supergiants
100
True or False: x-rays are one of the types of radiation that can pass through the Earth's atmosphere
What is false
100
A telescope that uses a curved mirror to gather and focus light
What is a reflecting telescope
200
True or False: stars use nuclear fission to create energy
What is false, the stars use nuclear fusion
200
true or false: a star with a positive magnitude is a very bright star
What is false
200
an apparent shift toward longer wavelengths of light that is caused when a luminous object moves AWAY from the observer
What is redshift
200
the time it takes for the earth to make one full rotation on its axis
What is a day
200
the path of an object around another
What is orbit
300
what is the Doppler Effect?
What is an increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move toward (or away from) each other
300
an apparent shift toward shorter wavelengths of light that is caused when a luminous object moves towards the observer
What is blueshift
300
stars that can be seen at all times of year and all times of night
What are circumpolar stars
300
what is inertia
What is the tendency of an object to resist being moved or, if the object is moving, to resist a change in speed or direction until an outside force acts on the object
300
what is the angle between an object and the horizon?
What is altitude
400
What is cosmic background radiation?
What is radiation that is left over from the Big Bang
400
the moment when the sun passes directly above the equator from south to north
What is the vernal equinox
400
true or false: the earth's atmosphere interferes with starlight
What is true
400
what are one of the most distant objects in space?
What is a quasar
400
Name 3 things a galaxy is made of
What are stars, dust, and gas
500
What is Copernicus's theory?
the sun is at the center of the universe, and all of the planets—including the Earth—orbit the sun
500
what is a pulsar
What is a rapidly spinning neutron star that emits pulses of radio and optical energy
500
why do astronomers study distant galaxies
Looking at distant galaxies reveals what early galaxies looked like.
500
How is the spectrum of a star different than that of a regular spectrum?
A star's spectrum gives astronomers information about the composition and temperature of a star, while a regular spectrum is the band of colors produced when white light passes through a prism
500
name one of newton's 3 laws of motion
What is (1)An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force. (2)The acceleration of an object depends on the mass of the object and the amount of force applied. (3)Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first.