Vocabulary
An early model of the universe where the sun, planets, and other stars revolves around the Earth
Geocentric model
The third planet from the sun. The only planet that we know of that contains life.
Earth
Large and small rocks or metallic masses orbiting the Sun; made up of materials similar to those that formed the planets
Asteroid
What determines the orbital paths of the objects in our solar system?
The sun
If Earth were a marble, which ball would represent jupiter?
Golf ball, tennis ball, basketball, marble
Basketball
A celestial body that revolves around the Sun
Planet
These planets are small, close to the sun, close to each other, have few moons, and are terrestrial (made of rocky material)
Inner Planets
What separates the four inner planets and the four outer planets?
Asteroid Belt
What two things is gravitational force dependent on?
Mass and Distance
How do the size of the inner planets compare to the size of the outer planets?
The inner planets are smaller
A celestial body that revolves around a planet.
Moon
These planets are giant, far from the sun, far from each other, have many moons, and are gaseous.
Outer planets
A small mass of ice and dust that comes from the oort cloud
The more massive the objects, the ____________ the gravitational force
higher
True or false: All planets in the solar system are equal distances from each other.
False
A model of the universe where planets revolve around the sun
Heliocentric model
What planet has the most rings?
Saturn
rocky object moving in space between the planets (smaller than asteroids- usually pebble sized)
Meteoroid
The further away two objects are from each other, the __________ the gravitational force.
lower
Which planet is closest to the sun?
Mercury
A regular, repeating path that one object in space takes around another one. Also called a revolution
Orbit
Which planet is the most massive?
Jupiter
A meteor that hits the Earth’s surface
Meteorite
The attraction between two objects due to the invisible force of gravity
Gravitational Pull
Which planet is furthest from the sun?
Neptune