Cycles Of The Sky
What Is A Spring Tide?
A tide just after a new or full moon
Definition of Astronomical Unit
unit of length, roughly the distance from Earth to the Sun and approximately equal to 150 million kilometres or 8.3 light-minutes
A tool that is designed for observing celestial bodies and that requires no image-erecting system
astronomical telescope
Define absolute magnitude?
the brightness of a celestial object as it would be seen at a standard distance
What Is A Neap Tide?
A tide just after the first or third quarter of a moon
Solar System Planets In order
Mercury,Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune
An instrument for determining the angle between the horizon and a celestial body such as the Sun, the Moon, or a star, used in celestial navigation to determine latitude and longitude
Sextant
The difference between a barred and regular spiraled galaxy?
the arms of the galaxy do not lead all the way into the centre, but are connected to the two ends of a straight bar of stars which contains the nucleus at its centre
What is a SunSpot?
Areas where the magnetic field is 2500 times stronger than Earth
Difference between the inner and outer planets?
Inner planets: called the "terrestrial planets" because they are made mostly of rock and metal. Outer planets: called the "gas giants" because they are made mostly of gases.
What Did Edwin Hubble Accomplish?
proved that galaxies are, in fact, moving away from us
Where are we located in the galaxy? (On which arms)
Orion Arm
Formation Of The Moon Theory?
Formed during a collision between Earth and another planet the size of Mars
How are meteorites formed?
fragments of asteroids that broke apart long ago in the asteroid belt
What Did Stephen Hawking accomplish?
discovery that black holes emit radiation which can be detected by special instrumentation
What shape is our galaxy?
Spiral
How are seasons formed?
The Earths tilt and spinning on its axis
Difference between meteorites and meteoroids.
meteoroids enter Earth's atmosphere at high speed and burn up, the fireballs or “shooting stars” are called meteors
What is the difference between orbital and optical telescopes?
optical telescope is a telescope that gathers light mainly from the visible part of the electromagnetic spectrum. orbital telescope is pretty much a space telescope
Where is our galaxy located?
Between Sagittarius and Perseus