8th grade mcgraw-hill solar system
What is the difference between inner and outer planets
1. inner made of of rock and metallic material but outer made of of gases 2. Inner smaller than outer planets 3. Inner planets outer layers are solid, outer planets outer layers are liquid
How many moons does mars have
2
what is earth's period of rotation
24 hr or one day
what is earth's period of revolution
365 days
How many planets in solar system
8
what are the 4 dwarf planets
Ceres, Pluto, Eris, makemake
the sun is mostly made of what gas
Hydrogen
what are the four galilean moons of jupiter
Io, Europa, Ganymede and callisto
What is the difference between Venus and other inner planets
It rotates from east to west
how are the rings different b/w Saturn and Jupiter
Saturn rings are 70,000 km but Jupiter's rings are made of ice
a dwarf planet is a sphere that orbits what
a star
how long is the au ?
about 150 million km
astronomical unit (au)
average distance from earth to sun
What is Venus's atmosphere made up of
carbon dioxide
what is Jupiter made up of
core is rock and ice but mostly gases
What is mercury surface covered with
craters
What is the planet orbit called
ellipse
probe
examination
would the speed of the planets be faster or slower if it they orbit in a circle than oval?
faster
The sun is at one of the what of the ellipse
foci
Galilean moons
four largest moons of Jupiter
What do they call outer planets because they are larger
gas giants
What increases the average temperature on earth
greenhouse effect
Why is Venus so hot
greenhouse effect
what is the sun mostly made of
hydrogen gas
what is the composition of the outer planets
ice and gases
terrestrial planet
inner planet that is made of rock and metallic materials and has a solid outer layer
What features do the inner planets share
inner planets are made from rocks and metals and have a solid surface. They are the planets closest to sun
what is the largest planet in solar system
jupiter
sun
largest object in the solar system
which inner planet is most capable to have life on it besides earth
mars
a dwarf planet had objects similar in what orbiting near it
mass
which inner planet has no atomphere
mercury
Which planet travels the quickest around the sun
mercury because it is the closest
meteroite
meteoroid that strikes a planet or moon
What kind of energy is produced on the sun
nuclear fusion
star
object in space made of gases in which nuclear fusion reactions occur that emit energy
comet
object made of gas, dust, and ice moves around the sun in an oval shaped orbit
planet
orbits the sun and has a spherical shape. Its mass is LARGER than the total mass of other objects
dwarf planet
orbits the sun and has spherical shape. Its mass is SMALLER than the total mass of other objects
Compared to the inner planets, why are the outer planets more likely to have rings
outer planets are massive so they have very strong gravitational forces. These forces apply pressure on atmosphere which might shatter a moon from one of these planets which form a ring
orbit
path an object follows as it moves around another object
Why is pluto recently classified as a dwarf planet not planet
pluto orbits the sun and is spherical but it is not larger than the objects around it. So it is a dwarf planet
What do planets, asteroids, comets do the sun light
reflect
impact crater
round depression formed by the impact of a meteorite on the surface of a planet, moon, or other space
asteroid
small rocky object that orbits the sun in the asteroid belt
meteroiod
small rocky particle that moves through space
what is the composition of the inner planets
solid rocky materials
a planet has what shape
spherical
meteor
streak of light in earth's atmosphere made by a glowing meteroroid
What does the gravitational force do
this force keeps each planet moving along a curved path around the sun
period of rotation
time it takes an object to complete one rotation
period of revolution
time it takes an object to travel around the sun
Which inner planet is the hottest in solar system
venus
What is Earth's atmosphere made up of
water vaper
greenhouse effect
when a planet's atmosphere traps solar energy and causes the surface temperature to increase
