Planets
These planets formed from smaller amount of heavy materials, and large amounts of gas and vapors blown outward from the sun's solar winds
What are the outer planets or gas giants (Jupiter, Saturn, Uranus and Neptune)?
The most massive object in the solar system.
What is the sun?
A moon is a natural type of this that revolves around a planet.
What is a satellite?
A unit of measurement used to describe distances within the solar system. (and what distance is it based on?)
What is an astronomical unit, based on the average distance from the center of the Earth to the center of the Sun?
The sun is this far away from earth.
What is 93 million miles? (one astronomical unit)
This is the 3rd planet from the sun.
What is earth?
Our sun is a medium sized, middle-aged example of this.
What is a star?
The hollow pits on the surface of the moon cause by impacts of objects from space.
What are craters?
People once believed the the objects in space revolved around the Earth, instead of the sun. This was known as..
What is the geocentric model?
The strength of gravity between 2 object depends on...
What mass of the objects and the distance between them?
This is what all the planets have in common?
What is "they revolve around the sun?"
It takes the earth 365.25 days to do this.
What is revolve (orbit) around the sun?
The moon's gravitational pull causes this rise and fall of the ocean.
What are tides?
This space object is known as a birthplace or nursery of stars and solar systems.
What is a nebula?
The object that the sun would have the least gravitational influence over:
The Moon / Mars / Jupiter / A comet
What is the moon (does anyone know why)?
These planets formed primarily of dense material remaining close to the sun through a process known as accretion
What are the inner, or rocky planets (Mercury, Venus, Earth and Mars)?
This is the reason why a comet speeds up when its orbit takes it nearer to the sun.
What is increased gravitational pull?
These are the apparent shapes of the moon as seen from Earth during a lunar cycle.
What are phases?
The universe is believed to contain billions to trillions of these, which contain 100s of millions of stars and solar systems, among other objects..
What are galaxies?
The reason why the Gas Giants were able to get so big.
What is the abundance of gas and vapor that was blown to the outer areas by the solar wind?
The two balanced forces that keep objects in orbit around the sun.
What are gravity and inertia?
The fusion of two hydrogen atoms into one helium atom.
What is nuclear energy that powers the sun?
Tides during a full-moon and a new moon are higher and lower than normal are called...
What are spring tides?
Enormous distances outside the solar system are described in these units
What are light years, which is the distance that light travels in one year, (nearly 6 trillion miles)?
If the sun were to suddenly "go out" how long would it take for us to notice on earth?
What is 8 minutes?