Models of the Universe
This model says Earth is at the center of the solar system.
What is the Geocentric Model?
The galaxy that contains our solar system.
What is the Milky Way?
The closest planet to the Sun.
What is Mercury?
Gravity keeps planets doing this around the Sun.
What is orbiting?
These icy objects develop tails near the Sun.
What is a comet?
This scientist supported the heliocentric model using observations with a telescope.
Who is Galileo?
The force that pulls objects toward each other.
What is gravity?
The largest planet in the solar system.
What is Jupiter?
This tendency of an object to keep moving helps planets stay in orbit.
What is inertia?
Most asteroids are found in this region.
What is the asteroid belt?
This model places the Sun at the center of the solar system.
What is the Heliocentric model?
The solar system is located in this part of the universe.
What is the Milky Way Galaxy?
This planet is known for its rings.
What is Saturn?
Gravity and inertia together create this type of path.
What is an orbit?
A meteoroid that burns up in Earth’s atmosphere is called this.
What is a meteor?
New evidence can cause scientific theories to do this.
What is change?
The universe contains galaxies, which contain these smaller systems.
These planets are rocky and closer to the Sun.
What are Inner Planets?
If gravity suddenly disappeared, planets would do this.
What is a straight line?
A meteor that reaches Earth’s surface is called this.
What is a meteorite?
This scientist proposed the heliocentric model before Galileo.
Who is Copernicus?
The idea that the universe began expanding from one hot, dense point.
What is the Big Bang Theory?
This planet is most able to support life as we know it.
What is Earth?
The Sun’s large mass gives it strong ________.
Comets are mostly made of ice and dust, while asteroids are mostly made of this.
What is rock and metal?