Our Solar System

Mercury, Venus, Earth, and Mars.

What are the inner planets?

terrestrial planets

What is another name for the inner planets?

rock and metal

What are the inner planets made of?

Mercury

What is the smallest terresttial planet?

Venus

What is the hottest planet?

Venus

Which planet is almost the same size as Earth?

Earth

Only planet where life can be found?

Jupiter, Saturn, Uranus, and Neptune

What are the outer planets?

gases

What are the outer planets made of?

jovian planets or gas giants

What is another name for the outer planets?

Jupiter

The largest of the planets?

Saturn

Almost the same size as Jupiter. Known for its prominent rings?

Uranus

A little bigger than Neptune? Tilted so far on its axis it spins on its side.

Neptune

Planet furthest from the Sun. A little smaller than Uranus.

geocentric and heliocentric

What are the 2 models of the solar system?

Geocentric

Solar system where the Earth is in the center and objects revolve around the Earth?

Heliocentric

Solar system where the Sun is in the center and objects revolve around the Sun?

Aristotle

First person to propose the geocentric model of the solar system?

Aristarchus

First person to propose the heliocentric model of the solar system?

Ptolemy

This person also believed in the geocentric model. He developed a detailed model that was used for 100s of years.

Copernicus

This person combined the works of Ptolemy and Aristarchus.

Kepler

This person discovered how the planets orbit are not perfect circles but elliptical.

Galileo

Made great improvements to the telescope.

celestial bodies that revolve around the Sun, however do not have enough mass to clear other bodies out of its own orbit.

What is a dwarf planet?

Makemake, Haumea, Ceres, Eris and Pluto.

What are the dwarf planets?

small bodies in space made of ice and dust.

What are comets?

Halley's Comet

What is the name of the most famous comet?

small rocky bodies that orbit the Sun.

What are asteroids?

much smaller pieces of rock that are knocked off of asteroids.

What are meteoroids?

meteor

When a meteoroid get close to Earth and vaporizes it is now called what?

shooting stars

What is another name for meteors?

meteorites

If a meteoroid gets close to Earth but doesn't vaporize it is now called what?

asteroid belt

Area is space between Mars and Jupiter where most of the asteroids are found?

Kuiper belt

Area in space located just outside of neptune's orbit. Many of the dwraf planets can be found there?

The Great Comet of 2024

A comet that will be visible from Earth in 2024, known as Atlas, and expected to be spectacular due to its brightness and long tail.