Big Bang
What are the 4 forces that were present during the big bang
gravity, em, and strong and weak nuclear forces
The planets in our solar system orbit__
the sun
The 4 gaseous planets are
saturn, jupiter, uranus, Neptune
which 2 planets have no moons
venus and mercury
how many moon are in the solar system
200
What are the 3 subatomic particles that were formed after the big bang
protons, neutrons, electrons
What is a light year
the distance that light travels in 1 year.
The speed of light is 186,000 miles per second or 671 million mph!
how many rings does Saturn have
7
the planet with 71% water
earth
what is cosmic backround radiation
microwave radiation that fills all space in the observable universe. It is a remnant that provides an important source of data on the primordial universe.
When the electrons combined with nuclei____ were formed
atoms
how long does earth take to rotate
24 hours
how many moons does neptune have
14
who is the red planet
what is dark energy
counteracts gravity
since the big bang the universe has
expanding
4.6 billion years ago
What planet is the furthest from the sun
neptune
how many moons does mars have
2
what are the 2 possibilities of the future of the universe
big freeze and big crunch
The farther away the galaxy is the_____ is moving away rom us. This is called____
Faster, hubbles law
the distance from the sun to earth is ___ million miles or 1 AU
93
what planet is the largest
jupiter
what are the rocky planets made up of
rock and metal
What is difference between comets, asteroids and meteors