8th grade mcgraw-hill solar system

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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


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