Formation of SS
4.6 Billion years ago there was a giant cloud of dust and gas called a _________
Nebula
The force of attraction between objects is called:
Gravity
In a geocentric model, what is at the center?
One of our dwarf planets; it is extremely cold
Pluto
Neptune
A _______ caused the cloud to collapse.
Supernova
What is the difference between Weight and Mass?
Mass - how much matter or “stuff” is in an object
Weight - how much gravity is pulling down on an object
In a heliocentric model, what is at the center?
Sun
The smallest of the gas giants; it has the strongest winds of any planet
Neptune
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
The cloud took the shape of a flat ___, which rotated faster and faster.
Disk
Inertia
Which model is the more correct model of our solar system: Heliocentric or Geocentric
Heliocentric
Planet known for its many rings; it is less dense than water and could float if you found a big enough pool
Saturn
What is Orbit?
The curved path in space that is followed by an object going round and round a planet, moon, or star.
The ______ pull of the center increased, pulling in even more material
Gravitational
______ objects have more gravitational force
Larger
Which astronomer said the solar system was heliocentric, not geocentric?
Copernicus
Huge planet that has a giant red spot that is a
storm that has been raging for centuries
Jupiter
What is between the Inner and Outer planets?
Asteroid belt
Eventually our _____ formed at its center.
Sun
Objects that are _______ to each other have more gravitational pull.
Closer
What is believed to be at the center of our galaxy?
A Black Hole.
Which 4 planets are the Gas Giants?
Neptune, Uranus, Saturn, and Jupiter.
What are galaxies made of?
Solar systems, gas, and dust
(will also allow stars and planets)