According to *, the Earth is at the center of the universe. What theory was that?
The Ptolomaic Theory.
The altitude of an object in the sky is its angular distance?
Above the horizon.
Which of these would be shorter if Earth rotated faster? A) Days B) Months C) Years D) Weeks?
Copernicus'z theory was unpopular when he first proposed it because he stated that the sun was what?
The center of the solar system.
The vernal equinox is used to establish a star's what?
A * is roughly the amount of time required for the moon to orbit the Earth once?
When astronomers determined that there were about 365.25 days in a year, Julius Caesar corrected this by.. A) Creating the Julian Calendar, B) adding 90 days to the year 45 B.C, C) Adding an extra day every four years, D) All of the above?
D) all of the above
The longest day of the year occurs on the day of the what?
Who was the first person to see craters & mountains on the moon and sunspots on the sun?
Why do the constellations change from season to season?
Because Earth orbits the sun.
The * is the line where the sky & Earth appear to meet.
You can measure the altitude of a star by measuring the angle between your horizon & the star using a(n) *.
* is the measure of how far east an object is from the point at which the sun appears on the first day of spring.
Which of the following does NOT depend on where you are & when you look? A) Celestrial Piont, B) Horizon, C) Altitude, D) Constellation Positions.
A) Celestrial Piont
Which place would be best for an astronomer to observe the sky & take measurements? A) Los Angeles, B) New York City, C) A Valley, D) A Mountain Top
D) A mountain top
Why do astronomers place telescopes on Mountain tops? A) These areas have less atmoshere, B) These areas have thinner air, c) These areas have fewer city lights, D) All of the above...
D) All of the above
What have astronomers done to help prevent light pollution, Water Vapor, & Atmospheric Interference?
They put telescopes in space.
The * is the apparent path of the sun across the celestial sphere as seen from Earth.
* is the measure of how far north or south an object is from the celestrial equator.
A * telescope uses curved mirrors to gather and focus light.
In 1852, James Clerk Maxwell showed that visible light is a form eletronmagnetic *.
What is a constellation?
It is a group of stars that are given a name so scientist can talk to each other & know what they are talking about.
How are constellations like states?
Because they are both givin an exact name & they both have an exact length.
How did the discovery of the galaxy Andromada contribute to knowlegdge of astronomers?
It taught astronomers about infrared & when its red its moving farther away.