Stars
What process occurs in the center of the sun which provides energy?
Nuclear Fusion
The moon traveling around the Earth is called a _________?
revolution
What category of planets are smaller in size?
Inner Planets
What is the sun centered system called?
Heliocentric
As distance increases, what happens to the gravitational force?
Decreases
What is the outer most layer of the sun called?
Corona
What is it called when the moon comes in between the Sun and the Earth?
Solar Eclipse
What planet has the most rings?
Saturn
The waxing portion means that the moon is _____ on the ____.
BRIGHT on the RIGHT
Where is the astroid belt located?
between Mars and Jupiter
What is the super-bright explosion of a massive star?
Supernova
What is the moon phase that allows a lunar eclipse to occur?
Full Moon
What is another name for the inner planets that have rocky surfaces?
Terrestrial
What is the shape of the planets orbits around the sun?
Elliptical
What season occurs in the US when the Northern Hemisphere is pointed towards the Sun?
Summer
_______ is a large cloud of dust and gasses where stars are "born".
A nebula
During a solar eclipse, what is the arrangement of the Earth, Sun and Moon?
Sun --> Moon --> Earth
Which group of planets all have rings and moons?
the outer planets
What do we call a meteor that gets burned up as it enters Earth's atmosphere?
shooting star
What is an Astronomical Unit?
the distance from the Earth to the sun
What happens to the number of daylight hours as we move from winter to spring?
increases
Why do we always see the same side of the moon?
the moon's revolution (orbit) equals its rotation (spin)
Which planet's axis is tilted such that the planet is on its side?
Uranus
What do scientists believe caused the extinction of the dinosaurs?
an asteroid
Some comets have long orbital periods lasting up to thousands of years and usually come from the outer most region of our galaxy called the ______ ______.
Oort Cloud