What is a body that revolves around a planet and that has less mass then a planet does?
Moon
100
How many planets are there in our solar system?
8
100
What is the orbital period of earth?
365 days
100
define satellite
a natural or artifical celestial body that orbits a planet
100
Name the 3 parts of a comet
core(nucleus), coma, tail
200
Any of the primary bodies that orbit the sun; a similar body that orbits another star or sun
Planet
200
what is the theory name called of how the solar system started?
Big bang thoery
200
What is the process called when molten iron sank to the center of earth and less dense materials were forced to the otter layers of earth?
differentiation
200
between 1969 and 1972 what program launched 6 aircrafts to the moon?
Apollo space program
200
Where are most asteroids located at?
asteroid belt
300
Time required for a body to complete a single orbit.
Orbital period
300
Why doesn’t Pluto qualify as a major planet?
It jumps different orbits and there are many other objects similar to Pluto
300
What is one way Oceans affect global temperatures/warming?
Dissolving carbon dioxide raises the temperature of the water and makes ice melt and increases the water temperature
300
how did most of the craters on the moon form?
When debris leftover from the formartion of the solar system struck the moon
300
What three compositions are asteroids classified by?
Silicate minerals, iron and nickel, carbon materials
400
A region of the solar system that is just beyond the orbit of Neptune and that contains small bodies made mostly of ice
Kuiper Belt
400
Name the planet(s) with Rings
Jupiter, Saturn, Uranus, Neptune
400
What is it called when volcanic eruptions release large amount of water vapor, carbon dioxide, nitrogen, methane, sulfur dioxide and ammonia?
outgassing
400
name the two things the moon's surface is covered with.
dust and rock;regolith, mare, marias, ridges, rilles
400
a spherical cloud of dust and ice that lies far beyond Pluto’s orbit and that contains the nuclei of billions of comets
What is a Oort cloud
500
The degree of elongation of an elliptical orbit
Eccentricity
500
How did the planets form?
They formed from a solar nebula and planetesimals developed from the cloud of gas and dust, eventually they became protoplanets
500
Name 3 elements found in the atmosphere.
Nitrogen, Oxygen, Trace Gases
500
Define Rilles
Long narrow canals that once filles the marias with lava
500
What is the difference between a meteroid, meteor and a meteorite
meteroid is a rocky body traveling through space, meteor is a bright streak of light, meteorite is a meteroid that has landed on earth surface because it did